From VerbotWiki

I'm like an elephant. I never forget.

The mem.get function allows you to get the value of variable and display it in a response.

Format:
<mem.get variable>

Example:

Rule: My dog's name is [dogname]
Input: My dog's name is [dogname]
Output: <mem.get dogname> is a good name for a dog.

Note: <mem.get variableName> behaves like [variableName] within Outputs and can be used interchangeably.

Sample Dialog:

User: My dog's name is Jack
Verbot: Jack is a good name for a dog.