What does one checkmark mean in WhatsApp in a group chat?

What does one checkmark mean in WhatsApp in a group chat - briefly?

In a WhatsApp group chat, a single checkmark indicates that your message has been sent from your device but not yet delivered to the recipient's device.

What does one checkmark mean in WhatsApp in a group chat - in detail?

In WhatsApp, the presence of a single checkmark next to a message in a group chat signifies that the message has been successfully sent from your device but has not yet been delivered to any of the recipients. This initial checkmark indicates the message's departure from your phone and its journey through WhatsApp's servers, aiming for the intended receivers. However, until additional checkmarks appear, it is important to note that the message has not reached any of the group members yet. This status allows users to understand the current stage of their communication, providing a clear indication when messages are still in transit and have not been successfully delivered.