[sane-devel] saned at service environment question

[ToddAndMargo]

Dear list,

In the man page, the script for saned at .service shows:

Environment=SANE_CONFIG_DIR=/etc/sane.d
# If you need to debug your configuration uncomment the next line and
# change it as appropriate to set the desired debug options
# Environment=SANE_DEBUG_DLL=255 SANE_DEBUG_BJNP=5

https://bugzilla.redhat.com/show_bug.cgi?id=1091566#c8
also adds:

#Environment=SANE_DEBUG_DLL=128 SANE_DEBUG_NET=128

Question:
Do you un-comment the all, or only uncomment one of them?

Question:

Should it not be?

Environment=SANE_CONFIG_DIR=/etc/sane.d SANE_DEBUG_DLL=255 
SANE_DEBUG_BJNP=5 SANE_DEBUG_NET=128

all run togther with spaces as the demlimier?

Questions:

What is
       SANE_CONFIG_DIR=/etc/sane.d
       SANE_DEBUG_DLL=255
       SANE_DEBUG_BJNP=5, and
       SANE_DEBUG_NET=128