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
std-system-error
digital
ojalgo
deepzoom
geode
spring-xd
native-activity
multiple-tables
atlaskit
assemble
dispose
emacs-prelude
maven-mirroring
printscreen
bloom-filter
ujson
qdatetime
symfony5
greenrobot-eventbus
levenshtein-distance
amazon-polly
block-comments
dotvvm
msal
runtime-type
kendo-upload
tomcat8.5
aws-service-catalog
suite
elasticsearch-client
