The ISPF through TSO option in mainframe is only option you can increase your productivity. The popular commands I am giving here are collected based on my experience and from other senior developers. The first few commands read here, before you move on to next level.
According to ITSTILLWORKS Mainframe computers are designed to be extremely reliable, not just speedy. They typically have redundant versions of hardware components like disk drives and electrical power supplies, so even if a component fails, the computer can continue to run.
They generally also have the ability to add computing power to a given task as needed in essentially real-time, making them well suited to handle spikes in workloads without going down.
I – Insert a line
D – Delete a line
R – Repeat a line
M/C – Move or copy
A/B/O – to specify destination of move/copy text
M – Identifies the line to be moved
M3 – Identified 3 lines
MM – Identifies block of lines
A symbolic label can be given. That starts with ‘.’
The labels start with ‘Z’ are system defined and cannot be defined by end user.
ZCSR – It locates where cursor is located
ZFIRST – Takes to first data line
ZLAST – Takes to last data line