diff --git a/JetCore.aux b/JetCore.aux
index 8492390..c95d563 100644
--- a/JetCore.aux
+++ b/JetCore.aux
@@ -13,7 +13,8 @@
 \@writefile{lot}{\addvspace {10\p@ }}
 \@writefile{toc}{\contentsline {section}{\numberline {4.1}Functions and Operators}{11}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {subsection}{\numberline {4.1.1}left(string, number-of-characters)}{11}{}\protected@file@percent }
-\@writefile{toc}{\contentsline {subsection}{\numberline {4.1.2}substring(string, start-position, number-of-characters}{11}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {4.1.2}random()}{11}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {subsection}{\numberline {4.1.3}substring(string, start-position, number-of-characters}{11}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {chapter}{\numberline {5}Common Gateway Interface Features}{13}{}\protected@file@percent }
 \@writefile{lof}{\addvspace {10\p@ }}
 \@writefile{lot}{\addvspace {10\p@ }}
@@ -24,7 +25,7 @@
 \@writefile{toc}{\contentsline {section}{\numberline {6.2}comment}{15}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {section}{\numberline {6.3}for}{15}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {section}{\numberline {6.4}header}{15}{}\protected@file@percent }
-\@writefile{toc}{\contentsline {section}{\numberline {6.5}if/else}{15}{}\protected@file@percent }
+\@writefile{toc}{\contentsline {section}{\numberline {6.5}if/else}{16}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {section}{\numberline {6.6}ifrow/else}{16}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {section}{\numberline {6.7}jet}{16}{}\protected@file@percent }
 \@writefile{toc}{\contentsline {section}{\numberline {6.8}mysql}{16}{}\protected@file@percent }
diff --git a/JetCore.log b/JetCore.log
index 696d032..e961bab 100644
--- a/JetCore.log
+++ b/JetCore.log
@@ -1,4 +1,4 @@
-This is pdfTeX, Version 3.141592653-2.6-1.40.25 (TeX Live 2023/Debian) (preloaded format=pdflatex 2024.10.28)  28 OCT 2024 12:50
+This is pdfTeX, Version 3.141592653-2.6-1.40.25 (TeX Live 2023/Debian) (preloaded format=pdflatex 2024.6.24)  1 NOV 2024 12:47
 entering extended mode
  restricted \write18 enabled.
  %&-line parsing enabled.
@@ -84,7 +84,7 @@ Chapter 3.
 ]
 Chapter 4.
 
-Overfull \hbox (8.39041pt too wide) in paragraph at lines 49--49
+Overfull \hbox (8.39041pt too wide) in paragraph at lines 53--53
 []\OT1/cmr/bx/n/12 substring(string, start-position, number-of-characters 
  []
 
@@ -97,7 +97,7 @@ Chapter 5.
 ]
 Chapter 6.
 [15]
-Underfull \vbox (badness 10000) has occurred while \output is active []
+Underfull \vbox (badness 7415) has occurred while \output is active []
 
  [16]
 [17] (./JetCore.aux)
@@ -108,7 +108,7 @@ L3 programming layer <2024-01-22>
  ) 
 Here is how much of TeX's memory you used:
  502 strings out of 476182
- 9170 string characters out of 5795594
+ 9170 string characters out of 5795595
  1931975 words of memory out of 5000000
  22569 multiletter control sequences out of 15000+600000
  564057 words of font info for 56 fonts, out of 8000000 for 9000
@@ -121,7 +121,7 @@ ve/texmf-dist/fonts/type1/public/amsfonts/cm/cmr12.pfb></usr/share/texlive/texm
 f-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb></usr/share/texlive/texmf-dist/
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 type1/public/amsfonts/cm/cmtt10.pfb>
-Output written on JetCore.pdf (17 pages, 115415 bytes).
+Output written on JetCore.pdf (17 pages, 116147 bytes).
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  60 compressed objects within 1 object stream
diff --git a/JetCore.pdf b/JetCore.pdf
index 37dc834..aae9346 100644
Binary files a/JetCore.pdf and b/JetCore.pdf differ
diff --git a/JetCore.toc b/JetCore.toc
index f7a2150..342ea79 100644
--- a/JetCore.toc
+++ b/JetCore.toc
@@ -4,14 +4,15 @@
 \contentsline {chapter}{\numberline {4}Expressions}{11}{}%
 \contentsline {section}{\numberline {4.1}Functions and Operators}{11}{}%
 \contentsline {subsection}{\numberline {4.1.1}left(string, number-of-characters)}{11}{}%
-\contentsline {subsection}{\numberline {4.1.2}substring(string, start-position, number-of-characters}{11}{}%
+\contentsline {subsection}{\numberline {4.1.2}random()}{11}{}%
+\contentsline {subsection}{\numberline {4.1.3}substring(string, start-position, number-of-characters}{11}{}%
 \contentsline {chapter}{\numberline {5}Common Gateway Interface Features}{13}{}%
 \contentsline {chapter}{\numberline {6}Tag Reference}{15}{}%
 \contentsline {section}{\numberline {6.1}call}{15}{}%
 \contentsline {section}{\numberline {6.2}comment}{15}{}%
 \contentsline {section}{\numberline {6.3}for}{15}{}%
 \contentsline {section}{\numberline {6.4}header}{15}{}%
-\contentsline {section}{\numberline {6.5}if/else}{15}{}%
+\contentsline {section}{\numberline {6.5}if/else}{16}{}%
 \contentsline {section}{\numberline {6.6}ifrow/else}{16}{}%
 \contentsline {section}{\numberline {6.7}jet}{16}{}%
 \contentsline {section}{\numberline {6.8}mysql}{16}{}%
diff --git a/JetCore.txt b/JetCore.txt
index de70476..f990cf8 100644
--- a/JetCore.txt
+++ b/JetCore.txt
@@ -46,8 +46,14 @@ perform operations on dates (date).
 
 \subsection{left(string, number-of-characters)}
 
+\subsection{random()}
+
+Use the random function to return a random number between 0 and 1.
+
 \subsection{substring(string, start-position, number-of-characters}
 
+
+
 Use the substring operation to extract a portion of a string and return
 the value as a string.