Man-page mentions keywords real_symbols and complex_symbols.

diff --git a/ginsh/ginsh.1.in b/ginsh/ginsh.1.in
index 4c448ddf0dcd57ec8ecabf72bd1ea9bfeb2b4f7e..44c2e38a88c2d537e7bb11009493beb5548c6891 100644 (file)
--- a/ginsh/ginsh.1.in
+++ b/ginsh/ginsh.1.in
@@ -82,6 +82,14 @@ when they are used. To refer to the unevaluated symbol, put single quotes
 .RB ( ' )
 around the name, as demonstrated for the "unassign" command above.
 .PP
+Symbols are considered to be in the complex domain by default, i.e. they are
+treated as if they stand in for complex numbers. This behavior can be changed
+by using the keywords
+.BI real_symbols
+and 
+.BI complex_symbols
+and affects all newly created symbols.
+.PP
 The following symbols are pre-defined constants that cannot be assigned
 a value by the user:
 .RS