diff --git a/.obsidian/workspace b/.obsidian/workspace
index e88551edb..51a1e4c7d 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -22,7 +22,7 @@
           {
             "id": "2042d836291ac9c0",
             "type": "leaf",
-            "dimension": 11.695906432748536,
+            "dimension": 5.847953216374268,
             "state": {
               "type": "markdown",
               "state": {
@@ -31,6 +31,18 @@
               }
             }
           },
+          {
+            "id": "8b96ddbe3d0aea2e",
+            "type": "leaf",
+            "dimension": 5.847953216374268,
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "regular expression.md",
+                "mode": "source"
+              }
+            }
+          },
           {
             "id": "dcfa6e896ea2b01d",
             "type": "split",
@@ -181,7 +193,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "regex.md",
+                "file": "regular expression.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -198,7 +210,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "regex.md"
+                "file": "regular expression.md"
               }
             }
           },
@@ -239,8 +251,9 @@
     "width": 300,
     "collapsed": true
   },
-  "active": "2042d836291ac9c0",
+  "active": "8b96ddbe3d0aea2e",
   "lastOpenFiles": [
+    "regular expression.md",
     "regex.md",
     "2021-05-30.md",
     "Day Planners/Day Planner-20210530.md",
@@ -249,7 +262,6 @@
     "onkyo volume.md",
     "break glass.md",
     "obsidian embeds.md",
-    "category theory basics.md",
-    "obsidian attachments.md"
+    "category theory basics.md"
   ]
 }
\ No newline at end of file
diff --git a/regex.md b/regex.md
index ccd89129e..8a53d44e3 100644
--- a/regex.md
+++ b/regex.md
@@ -1,5 +1,7 @@
 - a [[language]]
-	- [[pull]] [[regexp]]
+	- [[wp]] https://en.wikipedia.org/wiki/Regular_expression
+		- [[go]] [[wp]]
+	- [[pull]] [[regexp]] [[regular expression]]
 		- https://stackoverflow.com/questions/3058246/which-is-the-correct-shorthand-regex-or-regexp
 	- I can't believe they didn't have a node until [[2021-05-30]].
 		- I love [[regexes]].
\ No newline at end of file
diff --git a/regular expression.md b/regular expression.md
new file mode 100644
index 000000000..dd45edefe
--- /dev/null
+++ b/regular expression.md	
@@ -0,0 +1 @@
+- [[pull]] [[regex]]
\ No newline at end of file