PinK method on table objects: iselement

Table method: iselement

Test if a row is contained in a table.

 <tabobj> "iselement" [rowid]

<tabobj> is the name of a PinK table object,
iselement is the name of the applied method.
rowid is the index of the row to be tested. This value will be written into the window common block first. If there is no index given, the current value from the window common block is used.

Return value: boolean value,
- True if the row is already in the table,
- False if not.