Optional integer (the default is to search the entire screen).
The row location of one corner of a rectangular block of text.
col
Optional integer. The column location of one corner of a rectangular
block of text.
erow
Optional integer. The row location of the opposite corner of
a rectangular block of text.
ecol
Optional integer. The column location of the opposite corner
of a rectangular block of text.
casesense
Optional boolean (the default is false). Setting this attribute
to true causes the macro runtime to do a case-sensitive string compare.
wrap
Optional boolean (the default is false).
Setting this attribute to false causes the macro runtime to search
for the sequence of characters in each separate row of the rectangular
block of text. If the sequence of characters wraps from one row to
the next, the macro runtime will not find it.