diff --git a/README.md b/README.md
index 1d2430a..f513df9 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,20 @@
 # regLines
-Tool for generating random variables that follows given frequency distibution using linear regressions in given intervals.
+Tool for generating random variables that follows given frequency distibution using linear regressions in given intervals.  
+GitHub: https://github.com/YujiSODE/regLines  
+>Copyright (c) 2017 Yuji SODE \<yuji.sode@gmail.com\>  
+>This software is released under the MIT License.  
+>See LICENSE or http://opensource.org/licenses/mit-license.php
+______
+## 1. Synopsis
+`::regLines::reglines X Y ?name?;`  
+it outputs tcl script file that defines additional math functions (`lines(x)`, `linesPDF(x)` and `linesVar()`) and returns generated filename
+- `$X` and `$Y`: numerical lists for x-axis and y-axis
+- `$name`: a text used in order to generate filename of output file, and numbers are default value.  
+  generated filename has a form of `"${name}_regL.tcl"`
+
+## 2. Script
+It requires Tcl/Tk 8.6+.
+- `regLines.tcl`
+
+## 3. Library list
+- lSum/lSum.tcl (Yuji SODE, 2018): https://gist.github.com/YujiSODE/1f9a4e2729212691972b196a76ba9bd0
diff --git a/regLines.tcl b/regLines.tcl
index 7da6c87..b5ee5a6 100644
--- a/regLines.tcl
+++ b/regLines.tcl
@@ -54,10 +54,10 @@ package require Tcl 8.6;
 namespace eval ::tcl::mathfunc {
 	#=== lSum.tcl (Yuji SODE, 2018): https://gist.github.com/YujiSODE/1f9a4e2729212691972b196a76ba9bd0 ===
 	#it returns sum of given list
-	#Reference: Iri, M., and Fujino., Y. 1985. Suchi keisan no joshiki (Japanese). Kyoritsu Shuppan Co., Ltd. ISBN 978-4-320-01343-8
+	#Reference: Iri, M. and Fujino, Y. 1985. Suchi keisan no joshiki (Japanese). Kyoritsu Shuppan Co., Ltd. ISBN 978-4-320-01343-8
 	proc lSum {list} {
 		#=== lSum.tcl (Yuji SODE, 2018): https://gist.github.com/YujiSODE/1f9a4e2729212691972b196a76ba9bd0 ===
-		#Reference: Iri, M., and Fujino., Y. 1985. Suchi keisan no joshiki (Japanese). Kyoritsu Shuppan Co., Ltd. ISBN 978-4-320-01343-8
+		#Reference: Iri, M. and Fujino, Y. 1985. Suchi keisan no joshiki (Japanese). Kyoritsu Shuppan Co., Ltd. ISBN 978-4-320-01343-8
 		namespace path {::tcl::mathop};set S 0.0;set R 0.0;set T 0.0;foreach e $list {set R [+ $R [expr double($e)]];set T $S;set S [+ $S $R];set T [+ $S [expr {-$T}]];set R [+ $R [expr {-$T}]];};return $S;
 	};
 	#