Welcome to SBS.
Sorry, you had to wait so long for an answere.
( Most of the Members are moved to https://smilebasicsource.com/ )
To start programming is this Tutorital helpfull: How To Program #1 - Introduction
Your Question:
1. You don't have to save a file by using Edit-Mode for run. ( But you should do it, if you don't want to lose your data)
2. The upper screen can diplay 50 Letters (0 to 49) per line up to 30 lines (0 to 29).
Use "Locate"for easy positioning:
CLS Locate 49,29 Print "."3. Please note: this Example have to run in a Loop to show the last 2 lines correct. (The Runtime use Direct mode: this always generates 2 lines of text when a program is finished.) 4. Use "START" to Run the Code. (You don't need to switch to direct mode before.) (Please excuse my spelling mistakes.)