Replace text fragment

In Edit menu click Replace. Replace dialog will be showed

Type text for searhing and text for replacement then click Replace button. Found text fragment will be replaced

To find next matched text fragment without replacement click Find Next button

To replace all mathced fragment in text click Replace All button

Here is several options

Search can be processed in several orings

From cursor
Search start from caret position. When Incremental option is selected search will be in part of text preceding of start search position
Selected text
Search in selected text only. For starting text fragment mast be selected
Entire scope
Search starts from beginning of text
All texts
Search in all opened texts