* this function is to abide by common conventions and to be
* convenient for users, these details may change in future.)
*
- * * If the `NO_COLOR' environment variable is non-empty, then
+ * * If the %|NO_COLOR|% environment variable is non-empty,
* colour is disabled (%%\url{https://no-color.org/}%%).
*
- * * If the `TERM' variable is set to `dumb', then colour is
- * disabled (Emacs).
+ * * If the %|TERM|% variable is set to %|dumb|%, then colour
+ * is disabled (Emacs).
*
- * * If the `FORCE_COLOR' environment variable is non-empty,
+ * * If the %|FORCE_COLOR|% environment variable is non-empty,
* then colour is enabled, unless the value is 0, in which
* case colour is disabled (apparently from the Node
* community, %%\url{%%https://force-color.org/}%% and
* %%\url{https://nodejs.org/api/tty.html#writestreamgetcolordepthenv}%%).
*
- * * If the `CLICOLOR_FORCE' environment variable is
+ * * If the %|CLICOLOR_FORCE|% environment variable is
* non-empty, then colour is enabled (apparently from
* Mac OS, (%%\url{http://bixense.com/clicolors/}%%).
*
*
* * If the @TCEF_DFLT@ flag is set, then colour is enabled.
*
- * * If the `CLICOLOR' environment variable is non-empty, then
- * colour is enabled (again, apparently from Mac OS,
+ * * If the %|CLICOLOR|% environment variable is non-empty,
+ * then colour is enabled (again, apparently from Mac OS,
* (%%\url{http://bixense.com/clicolors/}%%).
*
* * Otherwise, colour is disabled.