The characteristics boxes are drop down menus, as are the weapon "Multiple?" fields (apart from Fist and Kick). Everything else is a text field.
You'll probably need to download it and open it in e.g. Adobe Reader - Firefox displays it but doesn't let you edit it, not sure about other browsers and readers.
later - forgot to make the spaces for the effect of fist and kick editable. I'll sort that, but for now please try this as it is.