The trap mechanism in Mumps has similarities to the exception mechanism in many other language. Most examples I have seen of trap usage is for catching unintent
libstreaming
svg-pattern
compilationmode
android-homebutton
guard
color-detection
appixia
text-cursor
file-type
redhat-containers
hotspot
yosys
graphicsmagick
multi-catch
mouseenter
edgecast
autoreload
bizunit
magnet-uri
avd-manager
photoview
string.xml
monadplus
profiling
cancellation
executereader
locked-files
merge-conflict
sap-commerce-cloud
sitefinity-13