Update instructions for blank-template and flat-template

blank-template/README.md

@@ -14,7 +14,7 @@ cd json-schema-random
 npm install .
 ```
 
-Then, run (in bash shell):
+To regenerate all files, run (in bash shell):
 
 ```shell
 for tag in `git -C ../standard tag | grep '1__\d__\d'`; do
@@ -24,13 +24,21 @@ done
 git -C ../standard checkout 1.1-dev
 ```
 
-Then, remove deprecated fields, by opening the `blank-template` directory in a text editor and using this regular expression to search deprecated fields and replace with empty strings:
+To regenerate one file, set a `tag` environment variable and run:
+
+```shell
+git -C ../standard checkout $tag;
+node cli.js ../standard/standard/schema/release-schema.json --no-random --no-additional > ../sample-data/blank-template/release-template-$tag.json
+git -C ../standard checkout 1.1-dev
+```
+
+Remove deprecated fields by opening the `blank-template` directory in a text editor and using this regular expression to search deprecated fields and replace with empty strings:
 
 ```text
 [,\n ]*"[a-zA-Z]+": "deprecated"
 ```
 
-Finally, change into this repository's directory, and indent the files with two spaces:
+Change into this repository's directory, and indent the files with two spaces:
 
 ```shell
 pip install ocdskit

flat-template/README.md

@@ -18,11 +18,8 @@ Feel free to hide or remove unused columns.
 
 ## Maintenance
 
-Change into this repository's directory, and run:
+This assumes that the `standard` repository and this repository have the same parent directory on your system, and that the `standard` repository is checked out to the latest tag. Install Flatten Tool, change into this repository's directory, and run:
 
 ```shell
-pip install flatten-tool
-git -C ../standard checkout 1__1__3
 flatten-tool create-template --truncation-length 5 --schema=../standard/standard/schema/release-schema.json -o flat-template/template --root-id=ocid --main-sheet-name releases
-git -C ../standard checkout 1.1-dev
 ```