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13.6 METAFONT formatting rules
There are special formatting rules for METAFONT files.
Tabs are used for the indentation of commands.
When a path contains more than two points, put each point on a separate line, with the operator at the beginning of the line. The operators are indented to the same depth as the initial point on the path using spaces. The indentation mechanism is illustrated below, with ‘------->’ indicating a tab character and any other indentation created using spaces.
def draw_something (test) = ------->if test: ------->------->fill z1 ------->-------> -- z2 ------->-------> -- z3 ------->-------> .. cycle; ------->fi; enddef;
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