update function commentary

seafbackup.sh

@@ -83,6 +83,7 @@ cleanup () {
     fi
 }
 
+# call cleanup and then exit with error report
 exitError () {
     printf "${err}[%s] -- [ERROR] %s: %s --${norm}\n" \
             "$(stamp)" "$1" "$2" >> "$logFile"
@@ -129,6 +130,7 @@ stamp () {
     (date +%F" "%T)
 }
 
+# same as exitError but for signal captures
 trapExit () {
     printf "${err}[%s] -- [ERROR] 99: Caught signal --${norm}\n" \
             "$(stamp)" >> "$logFile"