Getting started

Your first 5 minutes

In the next five minutes you will install Decree and run your very first command.

A sentence that tells the computer what to do is called a command. A list of commands is a program. Think of it as a note of requests for your computer.

1. Install (1 minute)

Go to the download page and pick your computer (Windows, Mac or Linux). Double-click the file you downloaded, and that's it.

2. Open (1 minute)

Double-click Decree Studio. This is where you write your commands.

Area What it is for
The big white area on the left Where you write
The right side (or bottom) Where your computer replies
▶ Run at the top Ask the computer to carry out your commands
■ Stop at the top Stop in the middle

3. Press ▶ (1 minute)

Type this line on the left:

Decree▶ Run
say "Hello"

Then press ▶ Run. If you see this on the right, it worked:

Output
Hello

Congratulations! Your computer just obeyed your first command.

4. Change one line (2 minutes)

Change Hello to anything you like and press ▶ again.

Decree▶ Run
say "Good morning!"

Now add another line below. Commands run from top to bottom.

Decree▶ Run
say "Good morning!"
say "Have a great day"
Output
Good morning!
Have a great day

If something goes wrong

  • If you see “Stumbled on line …”, that is an error — your computer saying “I didn't understand this part”. Nothing is broken. The message tells you what is wrong and how to fix it.
  • The most common mistake is a missing ". Check that every opening " has a closing one.

Next

The full tutorial is in Japanese for now, but every command also has an English form. See the English at a glance table, or open the playground and pick the “英語で書く” (English) sample.