\begin{twocollist}\itemsep=0pt
\twocolitem{\tt{WXTRACE}}{(Debug build only.)
-This variable can be set to comma-separated list of trace masks used in
+This variable can be set to a comma-separated list of trace masks used in
\helpref{wxLogTrace}{wxlogtrace} calls;
\helpref{wxLog::AddTraceMask}{wxlogaddtracemask} is called for every mask
in the list during wxWidgets initialization.}
\twocolitem{\tt{WXPREFIX}}{(Unix only.)
Overrides installation prefix. Normally, the prefix
-is hard-coded and is same as the value passed to {\tt configure} via
+is hard-coded and is the same as the value passed to {\tt configure} via
the {\tt --prefix} switch when compiling the library (typically
{\tt /usr/local} or {\tt /usr}). You can set WXPREFIX if you are for example
-distributing binary version of an application and you don't know in advance
+distributing a binary version of an application and you don't know in advance
where it will be installed.}
\twocolitem{\tt{WXMODE}}{(wxMGL only.)