# Glossary

| Term | Meaning |
|---|---|
| Add-in | A program that runs inside Excel. ExcelSend is an add-in for Microsoft 365 Excel. |
| Advanced alphabet | The Unicode character set. Needed for emojis and many special characters, and fits fewer characters per part. See [SMS message parts](/docs/reference/sms-message-parts/). |
| ExcelSend portal | The website where you manage your account: balance, reply numbers, Sender IDs and jobs. [portal.excelsend.com](https://portal.excelsend.com) |
| Job | One send from the add-in. Each job has a job number and a job reference. |
| Job reference | The code written to `exs_jobReference` that links a row to the job it was sent in. |
| Merge field | A column header between double carets, such as `^^firstName^^`, replaced by each row's value. See [Merge fields](/docs/sending/merge-fields/). |
| Message part | One SMS segment. Long messages are sent in several parts, and each part is charged. |
| Opt-out link | A 17-character link added to a message that lets the recipient stop your messages. See [Opt-outs](/docs/sending/opt-outs/). |
| Reply number | The number your contacts reply to. Either a shared ExcelSend number or your own. |
| Report columns | The `exs_` columns ExcelSend adds to your sheet with delivery data and replies. See [Report columns](/docs/replies-and-reports/report-columns/). |
| Send Rows | Rows in the range that don't yet have a job reference, and so will be sent. |
| Sender ID | A name, such as your organisation's, shown as the sender instead of a number. Can't be replied to. The add-in labels it "Sender Id". |
| Standard alphabet | The GSM character set. 160 characters fit in a one-part message. |
| Stop list | Numbers that have opted out. Messages to them are blocked. |
| Task pane | The panel ExcelSend opens in beside your sheet. |
{.table}

## Related

- [What ExcelSend does](/docs/getting-started/introduction/)
- [Messages in the add-in](/docs/reference/add-in-messages/)

---
Source: https://excelsend.com/docs/reference/glossary/