UNIT V - TEXT EDITORS

1. What is error handler? 

The error handler is used to check if there is an error in the program. If any error, it should warn the programmer by instructions to proceed from phase to phase.

 2. Name some of text editors.

 line editors

 stream editors

 screen editors

 word processors

 structure editors

3. What for debug monitors are used? 

Debug monitors are used in obtaining information for localization of errors. 

4. Mention the features of word processors.

 moving text from one place to another

 merging of text

 searching

 word replacement

5. What are the phases in performing editing process?

 Traveling phase

 Filtering phase

 Formatting phase

 Editing phase

6. Define traveling phase. 

The phase specifies the region of interest. Traveling is achieved using operations such as next screenful, bottom, find pattern.

7. Filtering phase.

 The selection of what is to be viewed and manipulated in given by filtering.

 8. Editing phase 

In this phase, the target document is altered with the set of operations such as insert, delete, replace, move and copy. 

UNIT V - TEXT EDITORS

1. Define interactive editor?

 An interactive editor is a computer program that allows a user to create and revise a target document. The term document includes objects such as computer programs, text, equations, tables, diagrams, line art, and photographs anything that one might find on a printed page. 

2. What are the tasks performed in the editing process? 

4 tasks

 Select the part of the target document to be viewed and manipulated.

 Determine how to format this view on-line and how to display it.

 Specify and execute operations that modify the target document.

 Update the view appropriately.

3. What are the three categories of editor’s devices?

 Text device/ String devices

 Button device/Choice devices

 Locator device

4. What is the function performed in editing phase? 
In the actual editing phase, the target document is created or altered with a set of operations such as insert, delete, replace, move and copy.

5. Define Locator device? 
Locator devices are two-dimensional analog-to-digital converters that position a cursor symbol on the screen by observing the user‟s movement of the device. The most common such devices for editing applications are the mouse and the data tablet.

6. What is the function performed in voice input device?
 Voice-input devices, which translate spoken words to their textual equivalents, may prove to be the text input devices of the future. Voice recognizers are currently available for command input on some systems.