Clarify purpose of use_param_file.param_file_arg
Fixes
RELNOTES: None.
@@ -442,7 +442,10 @@ public interface CommandLineArgsApi extends StarlarkValue {
"A format string with a single \"%s\". "
+ "If the args are spilled to a params file then they are replaced "
+ "with an argument consisting of this string formatted with "
- + "the path of the params file."),
+ + "the path of the params file."
+ + "<p>For example, if the args are spilled to a params file \"params.txt\", "
+ + "then specifying \"--file=%s\" would cause the action command line to "
+ + "contain \"--file=params.txt\"."),
@Param(
name = "use_always",
type = Boolean.class,
