diff --git a/docs/mkdocs.yml b/docs/mkdocs.yml
index c649bb814..7e1b0676a 100644
--- a/docs/mkdocs.yml
+++ b/docs/mkdocs.yml
@@ -53,6 +53,7 @@ nav:
- "Data-diving examples": "data-diving-examples.md"
- "Log-processing examples": "log-processing-examples.md"
- "SQL examples": "sql-examples.md"
+ - "Processing Kubectl and Helm output": "kubectl-and-helm.md"
- "DKVP I/O examples": "dkvp-examples.md"
- "Statistics examples": "statistics-examples.md"
- "Randomizing examples": "randomizing-examples.md"
diff --git a/docs/src/kubectl-and-helm.md b/docs/src/kubectl-and-helm.md
new file mode 100644
index 000000000..9ac08cd8d
--- /dev/null
+++ b/docs/src/kubectl-and-helm.md
@@ -0,0 +1,222 @@
+
+
+# Processing Kubectl and Helm output
+
+The `kubectl` and `helm` commands produce tabular-looking output, which Miller can parse -- however,
+there's a bit of whitespace-handling to be dealt with first.
+
+## Whitespace structure of kubectl
+
+The output of `kubectl` looks tabular -- so [PPRINT format](file-formats.md#pprint-pretty-printed-tabular) is perhaps a good choice.
+
+
+$ kubectl -n my-namespace get pods | head
+NAME READY STATUS RESTARTS AGE
+app-5mjwm4-274754k8468 0/1 Completed 0 6m51s
+app-5mjwm4-274754vdfnf 0/1 Completed 0 6m50s
+app-5mjwm4-0 1/1 Running 0 6h8m
+app-5mjwm4-27475nt9cc 0/1 Completed 0 6m53s
+app-5mjwm4-27474454-dc7wq 0/1 Error 0 16h
+app-5mjwm4-27475416-tv2ff 0/1 Completed 0 56s
+app-5mjwm4-2747541t7lgk 0/1 Completed 0 115s
+app-5mjwm4-27475245-7sg9r 0/1 Completed 0 171m
+app-5mjwm4-27475410-k4gcr 0/1 Completed 0 6m52s
+
+
+We can verify this using `kubectl -n my-namespace get pods | vim -`, then `:set list` within `vim`;
+or, perhaps piping the output to `cat -t`, or [bat -A](https://github.com/sharkdp/bat) -- in any
+case what looks like whitespace is really all space characters.
+
+To double-check, it's helpful to run tabular-looking output through a format-converter, and make
+sure the column headers are being correctly identified as keys, and the remaining lines are being
+correctly identified as values:
+
+
+$ kubectl -n my-namespace get pods | mlr --ipprint --ojson head -n 1
+[
+{
+ "NAME": "app-5mjwm4-274754k8468",
+ "READY": "0/1",
+ "STATUS": "Completed",
+ "RESTARTS": 0,
+ "AGE": "14m"
+}
+]
+
+
+## Sorting/filtering
+
+Suppose we want to sort the information for non-completed pods by age. We can use
+[dhms2sec](reference-dsl-builtin-functions.md#dhms2sec) to turn the `AGE` into something sortable.
+
+
+$ kubectl -n tiledb-rest get pods \
+ | mlr --pprint \
+ filter '$STATUS != "Completed"' \
+ then put '$AGESEC = dhms2sec($AGE)' \
+ then sort -n AGESEC
+NAME READY STATUS RESTARTS AGE AGESEC
+app1-1500-5mjwm4-0 1/1 Running 0 6h22m 22920
+app1-1624-6dh711-0 1/1 Running 0 6h27m 23220
+app1-1500-pqb9b4-0 1/1 Running 0 6h30m 23400
+app1-gbwuwi-2747495lbtzg 0/1 Error 0 7h59m 28740
+app1-gbwuwi-0 1/1 Running 0 8h 28800
+app1-gbwuwi-27474955r8gq 0/1 Error 0 8h 28800
+app1-gbwuwi-27474956rps8 0/1 Error 0 8h 28800
+app1-gbwuwi-2747495q7fnz 0/1 Error 0 8h 28800
+app1-gbwuwi-2747495vnxgn 0/1 Error 0 8h 28800
+app1-gbwuwi-674ddcfd89-2jt64 2/2 Running 0 8h 28800
+app3-5c79574b69-8njgr 2/2 Running 0 9h 32400
+app3-5c79574b69-np2qj 2/2 Running 0 9h 32400
+app3-a56i7c-0 1/1 Running 0 13h 46800
+app3-a56i7c-587dfc99cf-zrr4t 2/2 Running 0 13h 46800
+app2-1500-pqb9b4-274746pfbfd 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-274746jtz8t 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-274746pmmhq 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-27474624h8fp 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-2747462d8n96 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-2747462xnmcf 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-27474630-95668 0/1 Error 0 13h 46800
+app1-1500-pqb9b4-sr5vd 2/2 Running 0 13h 46800
+app1-1500-5mjwm4-27474454-dc7wq 0/1 Error 0 16h 57600
+app1-1500-5mjwm4-667c6fc66d-b97m9 2/2 Running 0 16h 57600
+app1-1624-6dh711-2747435h42j 0/1 Error 0 17h 61200
+app1-1624-6dh711-27474370-ph25r 0/1 Error 0 17h 61200
+app1-1624-6dh711-74fb5cf9d6-cl5tq 2/2 Running 0 17h 61200
+
+
+## Whitespace structure of helm list
+
+The output of `helm list` is a bit fussier. Here it's already clear that something's amiss, since not everything lines up:
+
+
+$ helm list
+NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
+appdev-an-sc-1500-5mjwm4 service-xyz 1 2022-03-28 11:33:05.389975262 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-exyzv-load-a56i7c service-xyz 1 2022-03-28 14:45:35.44317196 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-sa-sc-1500-pqb9b4 service-xyz 1 2022-03-28 14:24:33.978580048 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-sa-sc-1624-6dh711 service-xyz 1 2022-03-28 10:09:05.966332699 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-wertzxyffa-gbwuwi service-xyz 1 2022-03-28 19:47:34.96763583 +0000 UTC deployed appdev-cloud-test-7.1.12
+staging service-xyz 797 2022-03-28 18:39:34.005120936 +0000 UTC deployed appdev-cloud-test-7.1.12
+
+
+This isn't likely to be PPRINT format, as we soon see. Also note that the space before `+0000` is an issue.
+
+
+$ helm list | mlr --ipprint --ojson cat
+mlr : mlr: CSV header/data length mismatch 7 != 5 at filename (stdin) line 2.
+
+
+Running through `bat -A` or `cat -t` shows an issue. Namely, the Helm authors are mixing tabs and spaces -- `cat -t` shows tabs as `^I`:
+
+
+$ helm list | cat -t
+NAME ^INAMESPACE ^IREVISION^IUPDATED ^ISTATUS ^ICHART ^IAPP VERSION
+appdev-an-sc-1500-5mjwm4^Iservice-xyz^I1 ^I2022-03-28 11:33:05.389975262 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-exyzv-load-a56i7c^Iservice-xyz^I1 ^I2022-03-28 14:45:35.44317196 +0000 UTC ^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-sa-sc-1500-pqb9b4^Iservice-xyz^I1 ^I2022-03-28 14:24:33.978580048 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-sa-sc-1624-6dh711^Iservice-xyz^I1 ^I2022-03-28 10:09:05.966332699 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-wertzxyffa-gbwuwi^Iservice-xyz^I1 ^I2022-03-28 19:47:34.96763583 +0000 UTC ^Ideployed^Iappdev-cloud-test-7.1.12^I
+staging ^Iservice-xyz^I797 ^I2022-03-28 18:39:34.005120936 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+
+
+This mix of tabs and spaces, while not PPRINT, also isn't quite TSV either. As above, it's helpful to run tabular-looking data through a format-converter
+to see how it's structured:
+
+
+$ helm list | mlr --itsv --ojson head -n 1
+[
+{
+ "NAME ": "appdev-an-sc-1500-5mjwm4",
+ "NAMESPACE ": "service-xyz",
+ "REVISION": "1 ",
+ "UPDATED ": "2022-03-28 11:33:05.389975262 +0000 UTC",
+ "STATUS ": "deployed",
+ "CHART ": "appdev-cloud-test-7.1.12",
+ "APP VERSION": " "
+}
+]
+
+
+A solution here is Miller's
+[clean-whitespace verb](reference-verbs.md#clean-whitespace):
+
+
+$ helm list | mlr --itsv --ojson clean-whitespace then head -n 1
+[
+{
+ "NAME": "appdev-an-sc-1500-5mjwm4",
+ "NAMESPACE": "service-xyz",
+ "REVISION": "1 ",
+ "UPDATED": "2022-03-28 11:33:05.389975262 +0000 UTC",
+ "STATUS ": "deployed",
+ "CHART": "appdev-cloud-test-7.1.12",
+ "APP VERSION": ""
+}
+]
+
+
+Now we have the keys and values correctly identified within the tabular-looking data.
+
+## Sorting/filtering
+
+To find oldest items, it would suffice to sort by the `UPDATED` column, as that sorts lexically.
+However, let's parse the timestamps and compute their ages from the present:
+
+
+$ helm list \
+ | mlr --itsv --opprint clean-whitespace \
+ then put '$UPDATED = ssub($UPDATED, " +0000 UTC", "")' \
+ then put 'AGESEC = int(systime() - strptime($UPDATED, "%Y-%m-%d %H:%M:%S.%f"))' \
+ then sort -n AGESEC \
+ then cut -x -f 'APP VERSION,UPDATED' \
+NAME NAMESPACE REVISION STATUS CHART AGESEC
+appdev-sa-sc-1624-6dh711 service-xyz 1 deployed appdev-cloud-test-7.1.12 30874
+appdev-an-sc-1500-5mjwm4 service-xyz 797 deployed appdev-cloud-test-7.1.12 34955
+appdev-sa-sc-1500-pqb9b4 service-xyz 1 deployed appdev-cloud-test-7.1.12 48993
+appdev-xxyzv-load-a56i7c service-xyz 1 deployed appdev-cloud-test-7.1.12 50255
+staging service-xyz 1 deployed appdev-cloud-test-7.1.12 60543
+appdev-wertzxyffa-gbwuwi service-xyz 1 deployed appdev-cloud-test-7.1.12 65583
+
+
+## Extracting fields to be acted on
+
+Switching to [NIDX format](file-formats.md#nidx-index-numbered-toolkit-style) lets us extract fields and pass them onto other commands -- e.g. `helm uninstall`.
+We just need to switch the output format to `--onidx`, then cut out the `NAME` field.
+
+
+$ helm list \
+ | mlr --itsv --onidx clean-whitespace \
+ then put '$UPDATED = ssub($UPDATED, " +0000 UTC", "")' \
+ then put 'AGESEC = int(systime() - strptime($UPDATED, "%Y-%m-%d %H:%M:%S.%f"))' \
+ then sort -n AGESEC \
+ then cut -f NAME \
+ | tee names.txt
+appdev-sa-sc-1624-6dh711
+appdev-an-sc-1500-5mjwm4
+appdev-sa-sc-1500-pqb9b4
+appdev-xxyzv-load-a56i7c
+staging
+appdev-wertzxyffa-gbwuwi
+
+
+Then
+
+
+$ for name in $(cat names.txt); do helm uninstall $name; done
+
+
diff --git a/docs/src/kubectl-and-helm.md.in b/docs/src/kubectl-and-helm.md.in
new file mode 100644
index 000000000..ce6a8d7a3
--- /dev/null
+++ b/docs/src/kubectl-and-helm.md.in
@@ -0,0 +1,206 @@
+# Processing Kubectl and Helm output
+
+The `kubectl` and `helm` commands produce tabular-looking output, which Miller can parse -- however,
+there's a bit of whitespace-handling to be dealt with first.
+
+## Whitespace structure of kubectl
+
+The output of `kubectl` looks tabular -- so [PPRINT format](file-formats.md#pprint-pretty-printed-tabular) is perhaps a good choice.
+
+GENMD-CARDIFY
+$ kubectl -n my-namespace get pods | head
+NAME READY STATUS RESTARTS AGE
+app-5mjwm4-274754k8468 0/1 Completed 0 6m51s
+app-5mjwm4-274754vdfnf 0/1 Completed 0 6m50s
+app-5mjwm4-0 1/1 Running 0 6h8m
+app-5mjwm4-27475nt9cc 0/1 Completed 0 6m53s
+app-5mjwm4-27474454-dc7wq 0/1 Error 0 16h
+app-5mjwm4-27475416-tv2ff 0/1 Completed 0 56s
+app-5mjwm4-2747541t7lgk 0/1 Completed 0 115s
+app-5mjwm4-27475245-7sg9r 0/1 Completed 0 171m
+app-5mjwm4-27475410-k4gcr 0/1 Completed 0 6m52s
+GENMD-EOF
+
+We can verify this using `kubectl -n my-namespace get pods | vim -`, then `:set list` within `vim`;
+or, perhaps piping the output to `cat -t`, or [bat -A](https://github.com/sharkdp/bat) -- in any
+case what looks like whitespace is really all space characters.
+
+To double-check, it's helpful to run tabular-looking output through a format-converter, and make
+sure the column headers are being correctly identified as keys, and the remaining lines are being
+correctly identified as values:
+
+GENMD-CARDIFY
+$ kubectl -n my-namespace get pods | mlr --ipprint --ojson head -n 1
+[
+{
+ "NAME": "app-5mjwm4-274754k8468",
+ "READY": "0/1",
+ "STATUS": "Completed",
+ "RESTARTS": 0,
+ "AGE": "14m"
+}
+]
+GENMD-EOF
+
+## Sorting/filtering
+
+Suppose we want to sort the information for non-completed pods by age. We can use
+[dhms2sec](reference-dsl-builtin-functions.md#dhms2sec) to turn the `AGE` into something sortable.
+
+GENMD-CARDIFY
+$ kubectl -n tiledb-rest get pods \
+ | mlr --pprint \
+ filter '$STATUS != "Completed"' \
+ then put '$AGESEC = dhms2sec($AGE)' \
+ then sort -n AGESEC
+NAME READY STATUS RESTARTS AGE AGESEC
+app1-1500-5mjwm4-0 1/1 Running 0 6h22m 22920
+app1-1624-6dh711-0 1/1 Running 0 6h27m 23220
+app1-1500-pqb9b4-0 1/1 Running 0 6h30m 23400
+app1-gbwuwi-2747495lbtzg 0/1 Error 0 7h59m 28740
+app1-gbwuwi-0 1/1 Running 0 8h 28800
+app1-gbwuwi-27474955r8gq 0/1 Error 0 8h 28800
+app1-gbwuwi-27474956rps8 0/1 Error 0 8h 28800
+app1-gbwuwi-2747495q7fnz 0/1 Error 0 8h 28800
+app1-gbwuwi-2747495vnxgn 0/1 Error 0 8h 28800
+app1-gbwuwi-674ddcfd89-2jt64 2/2 Running 0 8h 28800
+app3-5c79574b69-8njgr 2/2 Running 0 9h 32400
+app3-5c79574b69-np2qj 2/2 Running 0 9h 32400
+app3-a56i7c-0 1/1 Running 0 13h 46800
+app3-a56i7c-587dfc99cf-zrr4t 2/2 Running 0 13h 46800
+app2-1500-pqb9b4-274746pfbfd 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-274746jtz8t 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-274746pmmhq 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-27474624h8fp 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-2747462d8n96 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-2747462xnmcf 0/1 Error 0 13h 46800
+app2-1500-pqb9b4-27474630-95668 0/1 Error 0 13h 46800
+app1-1500-pqb9b4-sr5vd 2/2 Running 0 13h 46800
+app1-1500-5mjwm4-27474454-dc7wq 0/1 Error 0 16h 57600
+app1-1500-5mjwm4-667c6fc66d-b97m9 2/2 Running 0 16h 57600
+app1-1624-6dh711-2747435h42j 0/1 Error 0 17h 61200
+app1-1624-6dh711-27474370-ph25r 0/1 Error 0 17h 61200
+app1-1624-6dh711-74fb5cf9d6-cl5tq 2/2 Running 0 17h 61200
+GENMD-EOF
+
+## Whitespace structure of helm list
+
+The output of `helm list` is a bit fussier. Here it's already clear that something's amiss, since not everything lines up:
+
+GENMD-CARDIFY
+$ helm list
+NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
+appdev-an-sc-1500-5mjwm4 service-xyz 1 2022-03-28 11:33:05.389975262 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-exyzv-load-a56i7c service-xyz 1 2022-03-28 14:45:35.44317196 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-sa-sc-1500-pqb9b4 service-xyz 1 2022-03-28 14:24:33.978580048 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-sa-sc-1624-6dh711 service-xyz 1 2022-03-28 10:09:05.966332699 +0000 UTC deployed appdev-cloud-test-7.1.12
+appdev-wertzxyffa-gbwuwi service-xyz 1 2022-03-28 19:47:34.96763583 +0000 UTC deployed appdev-cloud-test-7.1.12
+staging service-xyz 797 2022-03-28 18:39:34.005120936 +0000 UTC deployed appdev-cloud-test-7.1.12
+GENMD-EOF
+
+This isn't likely to be PPRINT format, as we soon see. Also note that the space before `+0000` is an issue.
+
+GENMD-CARDIFY
+$ helm list | mlr --ipprint --ojson cat
+mlr : mlr: CSV header/data length mismatch 7 != 5 at filename (stdin) line 2.
+GENMD-EOF
+
+Running through `bat -A` or `cat -t` shows an issue. Namely, the Helm authors are mixing tabs and spaces -- `cat -t` shows tabs as `^I`:
+
+GENMD-CARDIFY
+$ helm list | cat -t
+NAME ^INAMESPACE ^IREVISION^IUPDATED ^ISTATUS ^ICHART ^IAPP VERSION
+appdev-an-sc-1500-5mjwm4^Iservice-xyz^I1 ^I2022-03-28 11:33:05.389975262 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-exyzv-load-a56i7c^Iservice-xyz^I1 ^I2022-03-28 14:45:35.44317196 +0000 UTC ^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-sa-sc-1500-pqb9b4^Iservice-xyz^I1 ^I2022-03-28 14:24:33.978580048 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-sa-sc-1624-6dh711^Iservice-xyz^I1 ^I2022-03-28 10:09:05.966332699 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+appdev-wertzxyffa-gbwuwi^Iservice-xyz^I1 ^I2022-03-28 19:47:34.96763583 +0000 UTC ^Ideployed^Iappdev-cloud-test-7.1.12^I
+staging ^Iservice-xyz^I797 ^I2022-03-28 18:39:34.005120936 +0000 UTC^Ideployed^Iappdev-cloud-test-7.1.12^I
+GENMD-EOF
+
+This mix of tabs and spaces, while not PPRINT, also isn't quite TSV either. As above, it's helpful to run tabular-looking data through a format-converter
+to see how it's structured:
+
+GENMD-CARDIFY
+$ helm list | mlr --itsv --ojson head -n 1
+[
+{
+ "NAME ": "appdev-an-sc-1500-5mjwm4",
+ "NAMESPACE ": "service-xyz",
+ "REVISION": "1 ",
+ "UPDATED ": "2022-03-28 11:33:05.389975262 +0000 UTC",
+ "STATUS ": "deployed",
+ "CHART ": "appdev-cloud-test-7.1.12",
+ "APP VERSION": " "
+}
+]
+GENMD-EOF
+
+A solution here is Miller's
+[clean-whitespace verb](reference-verbs.md#clean-whitespace):
+
+GENMD-CARDIFY
+$ helm list | mlr --itsv --ojson clean-whitespace then head -n 1
+[
+{
+ "NAME": "appdev-an-sc-1500-5mjwm4",
+ "NAMESPACE": "service-xyz",
+ "REVISION": "1 ",
+ "UPDATED": "2022-03-28 11:33:05.389975262 +0000 UTC",
+ "STATUS ": "deployed",
+ "CHART": "appdev-cloud-test-7.1.12",
+ "APP VERSION": ""
+}
+]
+GENMD-EOF
+
+Now we have the keys and values correctly identified within the tabular-looking data.
+
+## Sorting/filtering
+
+To find oldest items, it would suffice to sort by the `UPDATED` column, as that sorts lexically.
+However, let's parse the timestamps and compute their ages from the present:
+
+GENMD-CARDIFY
+$ helm list \
+ | mlr --itsv --opprint clean-whitespace \
+ then put '$UPDATED = ssub($UPDATED, " +0000 UTC", "")' \
+ then put 'AGESEC = int(systime() - strptime($UPDATED, "%Y-%m-%d %H:%M:%S.%f"))' \
+ then sort -n AGESEC \
+ then cut -x -f 'APP VERSION,UPDATED' \
+NAME NAMESPACE REVISION STATUS CHART AGESEC
+appdev-sa-sc-1624-6dh711 service-xyz 1 deployed appdev-cloud-test-7.1.12 30874
+appdev-an-sc-1500-5mjwm4 service-xyz 797 deployed appdev-cloud-test-7.1.12 34955
+appdev-sa-sc-1500-pqb9b4 service-xyz 1 deployed appdev-cloud-test-7.1.12 48993
+appdev-xxyzv-load-a56i7c service-xyz 1 deployed appdev-cloud-test-7.1.12 50255
+staging service-xyz 1 deployed appdev-cloud-test-7.1.12 60543
+appdev-wertzxyffa-gbwuwi service-xyz 1 deployed appdev-cloud-test-7.1.12 65583
+GENMD-EOF
+
+## Extracting fields to be acted on
+
+Switching to [NIDX format](file-formats.md#nidx-index-numbered-toolkit-style) lets us extract fields and pass them onto other commands -- e.g. `helm uninstall`.
+We just need to switch the output format to `--onidx`, then cut out the `NAME` field.
+
+GENMD-CARDIFY
+$ helm list \
+ | mlr --itsv --onidx clean-whitespace \
+ then put '$UPDATED = ssub($UPDATED, " +0000 UTC", "")' \
+ then put 'AGESEC = int(systime() - strptime($UPDATED, "%Y-%m-%d %H:%M:%S.%f"))' \
+ then sort -n AGESEC \
+ then cut -f NAME \
+ | tee names.txt
+appdev-sa-sc-1624-6dh711
+appdev-an-sc-1500-5mjwm4
+appdev-sa-sc-1500-pqb9b4
+appdev-xxyzv-load-a56i7c
+staging
+appdev-wertzxyffa-gbwuwi
+GENMD-EOF
+
+Then
+
+GENMD-CARDIFY
+$ for name in $(cat names.txt); do helm uninstall $name; done
+GENMD-EOF
+