a Chat is a messaging application. You can display text and a user photo. And send photos.

Logging in
In the main window, enter your username and password. And click the “Log in” button. And you are logged in, if a user with that name and password exists.

Contacts window
In the contacts window, you can change a person’s information.
To change your main information, click the “Person” button. In the person window, you can change the person’s: email, name, and year of birth.
If you want to exit the contacts window, click the “Log out” button.
You can add more contacts by clicking the “Add Contact” button. In that window, you can search for contacts. If you want to find a named contact, enter the contact’s username in the filter box and you will see contacts containing that name.
If you no longer want to display this account in the contacts box, click the “Remove” button. The contact must be selected in the box.
If you want to delete all contacts, click the “Delete all” button. And you have deleted all contacts.
To start a conversation, click the “Begin Chat” button.
If you want to block certain contacts so that they cannot send you messages. To do this, click the “Blocked” button. In that window, you can also filter by name. If you want to add a contact to the blocked list, click the “Add” button and the contact must be selected. And if you want to remove a contact from the blocked list, select the contact from the blocked list and click the “Remove” button.
To exit the application, click the “Exit” button.
If you want to change the user’s picture, click on the picture. And you will be shown the pictures on your device. Select one of them and the picture will change.

Chat window
In that window, you can send messages. To send messages, click the “Send” button. You must first enter a message in the box at the top left.
To start sending a message, you must select a contact in the contacts window and click the “Begin Chat” button.
Messages are displayed in the chat box. Including the time and the contact’s name. If there is no name, the contact’s username is displayed.
If you want to exit the chat window, click the “Close” button.

Adding a user
To add a user, click the “Add user” button in the main window.
Note that you need to enter a username and password in the user addition window. And