ucfirst
Make a string's first character uppercase
[...] = optional ... = your value
[var $... = ]call ucfirst $val=...
Example code
Show in textarea<!--parser:xtscript-->
var $input = foobar
var $output = call ucfirst $val=$input
print input = $input<br />
print output = $output
<!--/parser:xtscript-->
Show in textarea Example output
Reloadinput = foobar
output = Foobar