.3.31.4 ---------------------------+---+----+--------------------------------+---+----+------+---------- user Data | o
.3.29.4 ---------------------------+---+----+--------------------------------+---+----+------+---------- user Data | o
.3.6.4 ---------------------------+---+----+--------------------------------+---+----+------+---------- user Data | o
.3.16.4 ---------------------------+---+----+--------------------------------+---+----+------+---------- user Data | o
.3.17.4 ---------------------------+---+----+--------------------------------+---+----+------+---------- user Data | o
BrowseCallback POINTER TO BYTE pUser
Ua_UInt32 UserWriteMask Opc
API. A user [...] the user application [...] notification. pUser