1. The document discusses using Eclipse and other tools to develop mruby programs for embedded systems like the STM32F4 Discovery board in an easier way.
2. It describes creating an mruby library called mruby-led to control the board's LEDs, and a plugin for Eclipse to generate mruby projects and gems.
3. The process involves cloning the mruby source, generating gems, building mruby, creating a board project, writing ruby code using tags, compiling to bytecode, debugging on the board using GDBServer, and demoing an LED blinking program.