(eplain.info)Formatting lists

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4.6.1 Formatting lists
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Several registers define the spacing associated with lists. It is likely
that their default values won't suit your particular layout.

'\abovelistskipamount, \belowlistskipamount'
     The vertical glue inserted before and after every list,
     respectively.

'\interitemskipamount'
     The vertical glue inserted before each item except the first.
     '\listcompact' resets this to zero, as mentioned above.

'\listleftindent, \listrightindent'
     '\listrightindent' is the amount of space by which the list is
     indented on the right; i.e., it is added to '\rightskip'.
     '\listleftindent' is the amount of space, _relative to_
     '\parindent', by which the list is indented on the left. Why treat
     the two parameters differently? Because (a) it is more useful to
     make the list indentation depend on the paragraph indentation;
     (b) footnotes aren't formatted right if '\parindent' is reset to
     zero.

   The three vertical glues are inserted by macros, and preceded by
penalties: '\abovelistskip' does '\vpenalty\abovelistpenalty' and then
'\vskip\abovelistskip'. '\belowlistskip' and '\interitemskip' are
analogous.

   In addition, the macro '\listmarkerspace' is called to separate the
item label from the item text. This is set to '\enspace' by default.

   If you want to change the labels on the items, you can redefine these
macros: '\numberedmarker' or '\unorderedmarker'. The following registers
might be useful if you do:

'\numberedlistdepth, \unorderedlistdepth'
     These keep track of the depth of nesting of the two kinds of lists.

'\itemnumber, \itemletter'
     These keep track of the number of items that have been seen in the
     current numbered list. They are both integer registers. The
     difference is that '\itemnumber' starts at one, and '\itemletter'
     starts at 97, i.e., lowercase 'a'.

   You can also redefine the control sequences that are used internally,
if you want to do something radically different: '\beginlist' is invoked
to begin both kinds of lists; '\printitem' is invoked to print the label
(and space following the label) for each item; and '\endlist' is invoked
to end both kinds of lists.