X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=doc%2Fflow-control.texi;h=fe81c94357c42a1b5b1bd1c6c4927a0dffba6424;hb=7a718e594fb0425e1e8f4ebbfa06463de8e88699;hp=fb2df35291abab9fc193f1acfc5a9d1f472b052a;hpb=1b1837591924226078c96db15888b68beec2ef6d;p=pspp

diff --git a/doc/flow-control.texi b/doc/flow-control.texi
index fb2df35291..fe81c94357 100644
--- a/doc/flow-control.texi
+++ b/doc/flow-control.texi
@@ -108,6 +108,9 @@ strings, comments, unquoted strings (such as the text on the
 @cmd{TITLE} or @cmd{DOCUMENT} command), or inside @cmd{BEGIN
 DATA}@dots{}@cmd{END DATA}.
 
+Substitution occurs only on whole words, so that, for example, a dummy
+variable PRINT would not be substituted into the word PRINTOUT.
+
 New variable names used as replacements are not automatically created
 as variables, but only if used in the code block in a context that
 would create them, e.g.@: on a @cmd{NUMERIC} or @cmd{STRING} command