Drop tracks

Drop all tracks with name `part-name' in the class ICLASS. For example,

CALL QVDROP (' ', ICLASS)

will drop tracks with any track in class ICLASS. The main application of this subroutine is to drop all tracks in a specific Lorentz frame. See the example in section 9.6.3.

If ICLASS = KRECO or ICLASS = KMONTE: Only tracks created in the analysis program are dropped; tracks coming from the event input file cannot be dropped.

It should be noted that , as no BOS garbage collection takes place in ALPHA , the memory space corresponding to dropped tracks is NEVER released inside an event . If one exceeds the size of the BOS array , the only way to solve the problem is to increase this size in the QUIBOS subroutine ( sec 3.5.5 on p.   ) .