makes programming the "XOR Cursor" me a criminal?
I heard of a Software Patent for a "cursor" that is visible on black and white surface +
 you can see the Letters under a Cursor ! WOooaaw.

Actually is this story real ?
I couldn't find any sources. AND :

Does it make me a criminal if i program this (trivial) piece of code ?
Would "they" put my in jail?  
i'm just curious ... :/
makes programming the "XOR Cursor" me a criminal?
===

I heard of a Software Patent for a "cursor" that is visible on black and white surface +
 you can see the Letters under a Cursor ! WOooaaw.

Actually is this story real ?
I couldn't find any sources. AND :

Does it make me a criminal if i program this (trivial) piece of code ?
Would "they" put my in jail?  
i'm just curious ... :/