Editing TPU
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Text Processing Utility, the core of several DEC text editors '''Maintainer:''' HewlettPackard '''Homepage:''' http://www.hp.com '''Manual:''' http://www.sysworks.com.au/disk$axpdocjun031/opsys/vmsos731/vmsos731/6018/6018pro.html http://h71000.www7.hp.com/doc/73final/6021/6021PRO.HTML (for [[EVE]]) '''Family:''' DecFamily '''Platform:''' VAX/VMS, OpenVMS '''License:''' Commercial It fully uses the Dec VTxxx series of terminal keyboards. Thus, it uses keys like the ''SELECT'' and ''INSERT HERE'' keys as expected. When issuing a command to the built-in command line processor, simply press the ''DO'' key. Help is available from the ''HELP'' Key. This makes [[TPU]] a very easy to learn text editor. Simply press the keys that are labeled as you expect, and you get the expected behavior. : TPU itself is not an editor. Rather, it's a text processing utility and language which you can use to write an editor. The primary editor that comes with TPU is [[EVE]], and TPU and EVE have spawned variants like [[LSEDIT]], [[WEVE]], and [[ADAM]]. EVE was DEC's replacement for [[EDT]], and EVE includes customizations to make it look like EDT for users used to that interface. --DMcCunney Like most powerful text editors, the TPU engine contains a powerful programming language as well. The TPU language is a macro language that looks a lot like [[ADA]]. That is, it is a Pascal language derivative like Delphi from Borland. It has a large number of built-in procedures and functions that you can call to invoke just about any built-in function. [[TPU]] is rather unique in its ability to provide "bound" and "unbound" cursor motion. Simply put, unbound means the cursor can move anywhere on the screen, even past the end of line characters. Bound means that the cursor must stay between newlines and the first character on a line. Bound is the behavior of most editors such as ViFamily and EmacsFamily editors. The TPU language is used as the basis for customizing TPU into [[EVE]] and [[LSE]] (LSEDIT, the Language-Sensitive Editor). TPU is available only on VAX/VMS and OpenVMS operating systems. However, there is an editor called [[nuTPU]] which implements the TPU functionality for other platforms such as Linux and Windows. You might say that TPU was DEC's answer to the Emacs Family of editors, which boast rich functionality and fanatical users. TPU is very customizable, yet never really attained the loyalty that Emacs or even [[XEDIT]] achieved. The keyboard layout is usually the EVE keyboard layout, though there is a native TPU keyboard layout, as well as EDT and LSEDIT layouts. The TPU language is powerful enough to emulate .... [[VI]]. Here's where the 'VAXMAN' did it: http://www.myths.com/~dpm/vms/TPU_emulation_of_vi.zip SteveLong, SharonBurlingame, and TerrellMitchell designed and implemented the VAX Text Processing Utility ( [[TPU]] ). '''Screenshot:''' http://h71000.www7.hp.com/doc/73final/6020/6020_screen1.gif
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