diff --git a/groff/letter.tmac b/groff/letter.tmac
index d7d2c0a..bbfc7b9 100644
--- a/groff/letter.tmac
+++ b/groff/letter.tmac
@@ -2,12 +2,12 @@
 .device papersize=8.5i,11i
 .
 .\" Calculate line length with PO
-.de CALCLL
 .if (\\n[PO] == 0) \{\
 .   \" If PO not defined, set to 1i
 .   nr PO 1i
 .\}
+.
+.\" Define line and header/footer
+.\" lengh as such
 .nr LL \\n[PO]*-2+8.5i
 .nr LT \\n[PO]*-2+8.5i
-..
-.CALCLL
diff --git a/groff/math.tmac b/groff/math.tmac
index 4bfbe21..1ad598c 100644
--- a/groff/math.tmac
+++ b/groff/math.tmac
@@ -100,6 +100,6 @@ define root % sqrt special Rt %
 .de Rt
 .  ds 0s \
 \Z'\h'0.3n'\\*(0s'\
-\h'-\\n(0hu+\\n(0du-0.6n'\
-\v'-\\n(0hu+\\n(0du+0.2n'
+\h'-0.1n-\\n(0hu'\
+\v'\\n(0du-1n'
 ..