Copying text from one file to another

[Cheryl Homiak]

I use shift-down-arrow to highlight lines of text, then command-c to  
copy them, then go to another file and do command-v to paste. My  
question is: Is there a way to either hilight all lines from a file  
you want, even though they aren't consecutive, and then copy? Or is  
there a way to append to the clipboard so what you've already copied  
isn't wiped out by the next copy? In other words, is there a way to  
get all the lines from a file you want to copy into a second file  
without having to go back and forth between the files several times?  
I realize you can use command-a (select all) and copy the whole file,  
but then you'd have to delete the lines you didn't want from the  
second file once you've pasted. I want to be able to go through a  
file, pick the lines I want, copy them, go to the second file and  
paste without having to repeate the process for each group of lines I  
want. Is there a way to do this?
--
Cheryl
"Where your treasure is,
there will your heart be also".