Use '##' for comments which stand alone on a line. * libinterp/corefcn/besselj.cc, libinterp/corefcn/conv2.cc, libinterp/corefcn/pinv.cc, libinterp/corefcn/rand.cc, libinterp/corefcn/regexp.cc, libinterp/corefcn/sqrtm.cc, libinterp/dldfcn/qr.cc, libinterp/parse-tree/pt-eval.cc, scripts/general/cplxpair.m, scripts/general/repmat.m, scripts/help/doc.m, scripts/help/doc_cache_create.m, scripts/image/colorcube.m, scripts/image/hsv2rgb.m, scripts/image/image.m, scripts/io/strread.m, scripts/io/textscan.m, scripts/miscellaneous/bzip2.m, scripts/miscellaneous/edit.m, scripts/miscellaneous/gzip.m, scripts/optimization/__all_opts__.m, scripts/optimization/fminbnd.m, scripts/optimization/sqp.m, scripts/pkg/private/get_forge_pkg.m, scripts/plot/area.m, scripts/plot/stemleaf.m, scripts/plot/surfc.m, scripts/plot/uiresume.m, scripts/plot/zlabel.m, scripts/polynomial/mkpp.m, scripts/polynomial/ppval.m, scripts/set/intersect.m, scripts/signal/freqz.m, scripts/sparse/pcg.m, scripts/sparse/pcr.m, scripts/sparse/svds.m, scripts/sparse/treelayout.m, scripts/specfun/ellipke.m, scripts/special-matrix/toeplitz.m, scripts/strings/dec2base.m, scripts/strings/strsplit.m, scripts/testfun/test.m, test/build-sparse-tests.sh, test/index.tst, test/system.tst: Use '##' for comments which stand alone on a line.

--- a/scripts/plot/area.m
+++ b/scripts/plot/area.m
@@ -229,7 +229,7 @@
 
 
 %!demo
-%! # Verify identity sin^2 + cos^2 = 1
+%! ## Verify identity sin^2 + cos^2 = 1
 %! clf;
 %! t = linspace (0, 2*pi, 100)';
 %! y = [sin(t).^2, cos(t).^2];
@@ -239,7 +239,7 @@
 %! title ('area() plot');
 
 %!demo
-%! # Show effects of setting BaseValue
+%! ## Show effects of setting BaseValue
 %! clf;
 %! x = [-2:0.1:2]';
 %! y = x.^2 - 1;
@@ -258,3 +258,4 @@
 %! h = area (x, y);
 %! set (h, 'ydata', sort (get (h, 'ydata')))
 %! title ('area() plot of sorted data');
+