snippet prob "Problem" bA
.HEADING 1 "Problem $1"

prob$0
endsnippet

snippet part "Part" bA
.HEADING 2 "Part $1"
$0
endsnippet

snippet EQ "eqn" bA
.EQ
$0
.EN
endsnippet

snippet -- "en dash" i
\[en]
endsnippet

snippet --- "em dash" iA
\[em]
endsnippet