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diff --git a/TWiki/RegularExpression.mdwn b/TWiki/RegularExpression.mdwn
index 5d50aec..e773b25 100644 (file)
--- a/TWiki/RegularExpression.mdwn
+++ b/TWiki/RegularExpression.mdwn
@@ -1,4 +1,6 @@
-Regular expressions allow more specific queries then a simple query.
+Regular expressions (REs), unlike simple queries, allow you to search for text which matches a particular pattern.
+
+REs are similar to (but more poweful than) the "wildcards" used in the command-line interfaces found in operating systems such as Unix and MS-DOS. REs are used by sophisticated search engines, as well as by many Unix-based languages and tools ( e.g., `awk`, `grep`, `lex`, `perl`, and `sed` ).
 
 **Examples**
 

diff --git a/TWiki/WelcomeGuest.mdwn b/TWiki/WelcomeGuest.mdwn
index 1e68fe6..17b66c3 100644 (file)
--- a/TWiki/WelcomeGuest.mdwn
+++ b/TWiki/WelcomeGuest.mdwn
@@ -6,7 +6,7 @@ you have reached the TWiki web (pronounced twee-kee web). %WIKITOOLNAME% is a me
 
 - Edit existing pages or create new pages by using any web browser.
 - Web pages are automatically linked. You do not need to learn HTML commands to link pages.
-- Very simple text formatting. Basically you write a web page like you would write an email.
+- Very simple text formatting. Basically, you write a web page like you would write an email.
 - Full text search with/without regular expressions.
 - All changes to pages are under revision control. Find out who changed what and when.
 - Automatic email notification when web pages change.
@@ -15,7 +15,7 @@ you have reached the TWiki web (pronounced twee-kee web). %WIKITOOLNAME% is a me
 
 **How %WIKITOOLNAME% Works**
 
-%WIKITOOLNAME% is divided up into **webs** , each one represents one area of collaboration.
+%WIKITOOLNAME% is divided up into **webs** ; each one represents one area of collaboration. The webs are accessible at the upper right corner. Our %WIKITOOLNAME% webs:
 
 Each web has hyper-linked topics. A **topic** is one web page in your browser.