h6. [[Programmer's Reference Manuals]] h6(. » [[Events]] h6((. » [[Event Numbers]] h6(((. » Event 21 h2. Expansion event |_<^{width:4em}. Entry | | |<^. R0|<^. 21 (&15) | |<^. R1|<^. [[Expansion Events|Event sub-reason code]]| h4. Use A number of different events are available through sub-reason codes. h4. See also * [[Event Numbers]] * [[Events Introduction]] * [[Expansion Events]]