11.  Output spaces

      To force extra spaces into the output, use a tilde ``~'' for each space you want: x~=~y~+~z
gives

You can also use a circumflex ``^'', which gives a space half the width of a tilde. It is mainly useful for fine-tuning. Tabs may also be used to position pieces of an expression, but the tab stops must be set by TROFF commands.