for ... do statement
while ... do statement
with ... do statement
to begin do statement
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.
Keywords, for, while, with, to begin do, to end do.