Comments and Echoing

Any line or portion of a line beginning with a # is treated as a
comment. Comments are ignored in processing.  For example:

> 4+5;#This is an example of a comment

gives the output:

> 9

Since a comment is not a statement, it does not need to be terminated. 
It only causes the remaining input on the line to be ignored.

It is possible to control how much information is echoed in Maple.  The
echo level can be set with the interface function.  An echo level of
four causes comments and statements to be echoed.  For more information
on how to control various user-interface settings, type:

> ?interface