To Check
--------
den_jack unset output args
sta    use of : in scalar context, many places
coherr change to isempty?
mtspectrum_of_spectrumc : tapers input argument is lost???
sta : variable sz used before set in else clause
mtfftpt Fs never used...


changes made
------------
fitlinesc line 65 preallocate indx array.
mtspectrum_of_spectrumc added parenthesis tau=(0:NF-1)/max(f); instead of brackets []
nex_cont.m replace isempty and setstr
nex_info.m replace isempty and setstr, preallocate types array
nex_int replace isempty and setstr
nex_marker replace isempty and setstr 
nex_ts replace isempty and setstr
nex_wf replace isempty and setstr 
ddt replace isempty 
plx_ad replace isempty , brackets line 66
plx_event replace isempty
plx_event_ts replace isempty
plx_info replace isempty
plx_ts replace isempty
plx_waves replace isempty
change_row_to_column preallocate dtmp
coherr  replace isempty
jackknife line 17 replace [1:c] with (1:c)
fig2_3 fig 2_4 fig 2_5 no parentheses in for
fig6_6 fig8_3 fig9_2 fitted added semicolons to suppress output
lfmarg added semicolons
plx_ad plx_event_ts plx_info plx_ts plx_waves align if/end statements
lfplot locfit: put semicolons inside if statements.
plotbyfactor: remove parenthesis inside for statement
predict: rewrote if/else to remove unnecessary statement
residuals: added semicolon in if statement
openR warning call fixed
Rdemo added semicolons to supress output
rscb fixed plot argument
plotsigdiff removed brackets [] l 80
cohgrampb, pt removed semicolon
binspikes, minmaxsptimes predeclared dtmp
mtdspecgrampt removed semicolon
locfitraw changed exist call