Is there any way to taper out the line so that it gets thinner uniformly from a defined point to the end of the line. This style of ending lines is fairly common in inking of comics especially digital inking so I assume that it is doable in inkscape.

Up until now the only way I've found is to convert stroke to path and do it manually. The problem is that this is time consuming and doesn't give perfect effects.

If this is possible how do you do it and if it's not does anyone know if it is a desired/requested feature that could be implemented soon?

Thanks,
Rorkimaru

Implemented in Inkscape 0.47: use one of the 'Triangle in' or 'Triangle out' shapes you can select on the bézier tool controls bar from the dropdown list for 'Shapes'. Internally this is realized by applying the LivePathEffect 'Pattern Along Path'. You can find more information about both topics in the online version of Tavmjong Bah's Inkscape Book: <http://tavmjong.free.fr/INKSCAPE/MANUAL/html/>

Bézier Tool:
<http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Paths-Creating.html#Paths-Bezier>
LivePathEffects (LPEs):
<http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Paths-LivePathEffects.html>
Pattern Along Path LPE:
<http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Paths-LivePathEffects-PatternAlongPath.html>

Note: this only partially answers your request: you cannot taper out «from a defined point to the end of the line», the lines are proportionally thinned out (as a parametrized shape). But you could experiment with custom patterns copied to the clipboard and then used as shapes when choosing 'from clipboard' from the 'Shapes' dropdown list. The pattern can be edited on-canvas with the node-edit tool (best to open the 'Path Effect Editor' and go from there to fine-tune your pattern and other parameters (width, offset etc.)).