for ... do
statement
or
while ... do
statement
or
with ... do
statement
or
to begin do
statement
or
to end do
statement
The do reserved word is used in combination with other Pascal
keywords in many ways. For description and examples see the relevant
reference sections: for, while, with,
to begin, to end.
do is defined in ISO 7185 Pascal and supported
by all known Pascal variants.
See references.