document since (#17048)

* document `since` * address comment
2021-02-16 11:20:01 -08:00 · 2021-02-16 11:20:01 -08:00 · b187caeb87
commit b187caeb87
parent 71feb96c63
3 changed files with 19 additions and 7 deletions
--- a/doc/advopt.txt
+++ b/doc/advopt.txt
@ -146,7 +146,7 @@ Advanced options:
                            enable experimental language feature
  --legacy:$2
                            enable obsolete/legacy language feature
-  --useVersion:1.0          emulate Nim version X of the Nim compiler
+  --useVersion:1.0|1.2      emulate Nim version X of the Nim compiler, for testing
  --profiler:on|off         enable profiling; requires `import nimprof`, and
                            works better with `--stackTrace:on`
                            see also https://nim-lang.github.io/Nim/estp.html