Select Project Transactions to Invoice
Explanation
This activity is used to select the project transactions that
should be included on an invoice. 
Prerequisites
	- The relevant project transactions should exist.
System Effects
	- The basis for a preliminary invoice is selected. 
Window
Create Project Invoice
Related Window Descriptions
Create Project Invoice
Procedure
  - Open the Create Project Invoice 
	window. 
- Populate or query for the required transactions. 
- Select the lines you wish to include in the invoice. If you want to
    select more than one line, press the Ctrl-key continuously while
    clicking on the required lines. It is not possible to select lines that 
	belong to both multi-company transactions and the normal project 
	transactions at the same time.