(tu10.txt)
The topic of this tutorial tu1 is to answer the question:
"How do I retrieve data from this library."

The main retrieval verb is "boot". 
Boot is diadic. 
The left argument x. is either 0 or 2. 0 results in decommented code and 
2 results in fully commented code. Use the decommented code for routine 
processing and the commented code for understanding the workings of the verb, 
debugging and code-maintenance. If you forget to provide a lft. arg. you get 
a domain error message. 
There is no discernable difference between the time needed to retrieve 
commented or decommented code. The decommenting was done during the 
filing stage.
The right argument y. is a list of one or more verb names. Boot will get
the code for this list of verbs one by one and create scripts for each of 
them. In the next step of tutorial "tu1" verb boot will be discussed in 
more detail.