to place Ground and Power (VCC) terminals. These are essential for defining power nets.
I notice you’re asking about — likely referring to a portable, cracked, or “ready-to-run” version of Proteus PCB design and simulation software (often from Labcenter Electronics). proteus portable 88
: Many manufacturers produce "portable 88" digital pianos focused on lightweight design, such as the Yamaha CP88 (18.6 kg) or Roland GO:PIANO88 Key Features of a Portable 88-Key Keyboard to place Ground and Power (VCC) terminals