We should be prompted as to what you want to save...
We want to save the articles we just tagged, so we press T (capital T) or we could just press RETURN since tin knows we tagged some articles, and thus, Tagged articles is the default for saving...
Next we must give a name for the articles being saved. The name pic will be fine, so we type it and press RETURN.
Now, we are asked if we want to perform an special processing on the articles. WE DO since we are saving pictures. Choose the uud(ecode) option by pressing u.
Tin should save and post process the files. When it is done you'll be asked to delete the post processed files. You may say yes by typing y. You may ignore the error:
sum: Can't open -r