I. Introduction
badboy support checkpoint and parameterization.
Second, checkpointing
Checkpointing: Select the text you want to check, then Tools - Adding an assertion> Add Assertion for Selection, the replay again 
PS: Tick represented by checks, but why search jmeter interview questions, recording the script returns: jmeter% C3% E6% CA% D4% CC% E2 - yet found the cause and find a method to solve
Third, the parametric
