These pictures may help ;)

(Lampansail windmill copied from www.dede.go.th)

<I did 'copy image' the from another (webpage in another tab/pane) and paste into this one. This technique seems to work from webpage to webpage. I can't copy pictures directly from a (clientside) directory/picture viewer (program) to Gotoknow textbox, I have to upload (the picture) files to Gotoknow server(s) first then copy the pictures from there into the post.>