This variable is used to indicate whether standard or extended text tokens
should be printed by calls to DETOK. It allows us to mix standard tokens in
with extended tokens. It has two values:
* %00000000 = print extended tokens (i.e. those in TKN1 and RUTOK)
* %11111111 = print standard tokens (i.e. those in QQ18)
The default value is %00000000 (extended tokens).
Standard tokens are set by jump token {6}, which calls routine MT6 to change
the value of DTW3 to %11111111.
Extended tokens are set by jump token {5}, which calls routine MT5 to change
the value of DTW3 to %00000000.