Best substring software for free download

A shareware program that performs search and replace operations on multiple substrings in multiple files. Case-insensitive, "whole word", and wildcard searches are supported.
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RQ Search and View is a utility used to search and view text in files for Microsoft Windows 98/XP. File formats supported are text files with Windows, Rich Text Format (RTF), HTML (web pages). You shouldn't create index files before search
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Search and replace text in files and MSWord - a text strings, whole words, "enclosed blocks", HTML tags and attributes, RTF documents supported. Replace, delete, insert before.., insert after.. operations. Wildcards in MS Word documents.
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