Doc: Minor grammar change in Usage Manual

Simplified the explanation for the Variable LILYPOND_GC_YIELD

diff --git a/Documentation/usage/running.itely b/Documentation/usage/running.itely
index faeb8146663a534a7314fce35e6b4d52d4c42935..d72d02e274e0d0eb6131d6a352a6b8a615b70802 100644 (file)
--- a/Documentation/usage/running.itely
+++ b/Documentation/usage/running.itely
@@ -446,10 +446,7 @@ subdirectories called @file{ly/}, @file{ps/}, @file{tex/}, etc.
 This selects the language for the warning messages.
 
 @item LILYPOND_GC_YIELD
-With this variable the memory footprint and performance can be
-adjusted.  It is a percentage tunes memory management behavior.  With
-higher values, the program uses more memory, with smaller values, it
-uses more CPU time.  The default value is @code{70}.
+A variable, as a percentage, that tunes memory management behavior.  A higher values means the program uses more memory, a smaller value means more CPU time is used.  The default value is @code{70}.
 
 @end table