diff --git a/README.md b/README.md
index 8097227..edad6fd 100644
--- a/README.md
+++ b/README.md
@@ -29,10 +29,11 @@ Scope:
 - This guide is both for beginners and the experienced. The goals are *breadth* (everything important), *specificity* (give concrete examples of the most common case), and *brevity* (avoid things that aren't essential or digressions you can easily look up elsewhere). Every tip is essential in some situation or significantly saves time over alternatives.
 - This is written for Linux. Many but not all items apply equally to MacOS (or even Cygwin).
 - The focus is on interactive Bash, though many tips apply to other shells and to general Bash scripting.
+- It includes both "standard" Unix commands as well as ones that require special package installs -- so long as they are important enough to merit inclusion. 
 
 Notes:
 
-- To keep this to one page, content is implicitly included by reference. You're smart enough to look up more detail elsewhere once you know the idea or command to Google. Use `apt-get`/`yum`/`dnf`/`brew` (as appropriate) to install new programs.
+- To keep this to one page, content is implicitly included by reference. You're smart enough to look up more detail elsewhere once you know the idea or command to Google. Use `apt-get`/`yum`/`dnf`/`pip`/`brew` (as appropriate) to install new programs.
 - Use [Explainshell](http://explainshell.com/) to get a helpful breakdown of what commands, options, pipes etc. do.