DS.L n
RML n
These directives generate n long words of zeroes into the current section and adjusts the location counter accordingly. If the directive is labeled, the label is assigned the location counter of the current section before the space is allocated in that section. If n is one, the label's data type is set to LONG, otherwise it is set to be a fixed array of LONG[n].
The location counter is not aligned before allocating space.
Temp DS.L 10
This reserves 10 long words in the current section, sets them all to zero, and defines Temp as the start of the block with type LONG[10].