\" Quality of life utilities
\" for easier eqn usage.

\" --- Define register ---
.nr eqn 0 1

.EQ
delim $$
define . '~ \[md] ~'
define * '~ \[mu] ~'
define +- '~ \[+-] ~'
define -+ '~ + bar ~'
define and '~ \[AN] ~'
define div '~ \[di] ~'
define grad '\[gr]'

define vec %
"$1" sup fwd -70 up 40 size 5.5 \[->] ""
%
define circumflex %
size 8 "$1" sup fwd -29 up 5 size 6 \[ha]
%
.EN