You don't have to do this all on the command line, though, there are a few GUI
options out there. The nice thing about these is you can wave a mouse over a
-variable and a dump of it's data will appear in an appropriate window, or in a
+variable and a dump of its data will appear in an appropriate window, or in a
popup balloon, no more tiresome typing of 'x $varname' :-)
In particular have a hunt around for the following: