2.10.3 explanation

2-IOC-deployment.md

@@ -315,6 +315,14 @@ perl -CSD /APSshare/epics/base-7.0.4.1/bin/rhel8-x86_64/convertRelease.pl -t /ho
 ```
 </details>
 
+<details>
+<summary>what does this mean?</summary>
+
+Perl is a programming language commonly used for scripting and text processing. The command is essentially invoking the convertRelease.pl script and passing the path to the envPaths file as an argument. The script will process the envPaths file and perform any necessary conversions to set up the necessary environment variables.
+
+</details>
+
+
 #### 2.10.4 Run the IOC
 
 Start the IOC and confirm the error is resolved.