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Glossary

Short definitions. Tax and regulation terms are explained for orientation only; verify locally.

Fiado: Selling on credit to a known customer, tracked in a notebook or, in Simca’s plan, in a ledger. A common small-shop practice in Peru and elsewhere.
GRE (Guía de Remisión Electrónica): Peru’s electronic waybill for transporting goods. Simca’s catalog plans it as updatable rules data. Always verify against the tax authority.
SUNAT: Peru’s national tax authority. The first fiscal pack targets its electronic documents (planned, not built).
CONN: The catalog module code for Interchange: digital waybilling and the supply network. The product name is not decided.
KDS (kitchen display system): A screen that replaces or supplements kitchen printers.
ESC/POS: A common command language for receipt printers. The catalog plans to generate its bytes in the core.
Tap to Pay: Card acceptance on a phone via NFC, through a certified payment-provider SDK. Planned as an adapter; Simca does not read or store card numbers. Needs the online sign-in per ADR-0001.
WAL (write-ahead logging): A SQLite journaling mode that the stack recommendation uses for durability.
FEFO: First-expired, first-out: pick the stock that expires soonest.
Z report: An end-of-shift or end-of-day closing report. An X report is the same view taken mid-shift without closing.
X report: A mid-shift snapshot of sales and cash that does not close the period.
Boleta: In Peru, a simplified sales receipt, usually for consumers. Rules change; verify locally.
Factura: An invoice, in Peru used mainly between businesses. Verify locally.
CPE: Comprobante de pago electrónico: the family of Peruvian electronic payment documents. The catalog’s PE module lists 66 items under this heading.
IGV: Peru’s general sales tax, similar to a value-added tax. The site states no rates.
UIT: Unidad Impositiva Tributaria: a Peruvian reference unit used to set tax thresholds. The catalog treats its value as an editable yearly parameter; the site states none.
NRUS: Nuevo Régimen Único Simplificado: a simplified Peruvian regime for very small businesses. Verify current rules.
DNI: Peru’s national identity number, sometimes required on receipts above a threshold.
Yape: A Peruvian mobile wallet. Recorded manually in Simca’s plan.
Plin: A Peruvian wallet network. Recorded manually in Simca’s plan.
Bodega: A small neighbourhood grocery shop.
Cevichería: A restaurant specialising in ceviche; the catalog has a preset for it.
Mayorista: A wholesaler.
Pandero or junta: A rotating savings group where members contribute regularly and take turns receiving the pot.
SKU: Stock-keeping unit: one sellable variant of a product.
PLU: Price look-up code for items without a barcode, such as produce.
BOM (bill of materials): The list of components consumed to make or sell something.
FIFO: First in, first out: use the oldest stock first.
Lot or batch: A group of units made or received together, tracked for expiry and recalls.
Tender: The way a sale is paid, such as cash, wallet or card.
Float: The starting cash in a drawer.
Till: The cash drawer and its register session.
Safe drop: Moving excess cash from the drawer to a safe during the day.
Over and short: The difference between counted and expected cash.
Void: Cancelling a sale line or a whole sale before it is finalised.
Comp: A free item given away, recorded with a reason.
RMA: Return merchandise authorisation: the process for returning faulty goods.
Proof of delivery: Evidence that goods arrived, such as a signature or photo.
Waybill (guía): A document that accompanies goods in transport.
Manifest: A list of parcels or stops on a delivery route.
Backhaul: A return trip carrying a second load instead of travelling empty.
Geofence: A virtual boundary around a place that can trigger an event when crossed. In Simca’s plan location is opt-in and local.
Hybrid logical clock: A timestamp scheme that orders events across devices without perfect clocks.
SQLite: A small embedded database stored in a single file.
Rust: A systems programming language; the repo recommends it for the core.
Flutter: A cross-platform UI toolkit; the repo recommends it for the interface.
Launcher: The one download that installs, starts and updates Simca and lets the user choose elements. Designed in ADR-0001.
Element: A catalog item or module that can be included in a package.
Package spec: A small JSON file listing chosen elements, written by the launcher.
Pricing class: A catalog field: standard licensing or free package.
Network access: A catalog field: offline, optional online action, or online sign-in required.
ADR: Architecture decision record: a short document recording a decision. ADR-0001 covers the launcher.
Co-op: The README’s idea that price falls for everyone as the network grows.
Lite and Pro: Catalog tiers: Lite is simpler and single-device; Pro is full.
Preset: A pre-ticked selection of elements for a business type.
Data mule: A person who carries signed data between devices that are not connected, for example a driver.
Gossip: Peer-to-peer spreading of data when devices meet.
Ed25519: A modern digital-signature scheme; proposed, not decided.
Idempotent import: Importing the same file twice has the same result as once.
Attestation: A signed statement, such as a positive rating, held by the rated party.
Offline-first: Design in which the device works fully without internet and syncs when it can.
Local-first: The data lives on the user’s devices rather than a vendor’s server.
Telemetry: Automatic collection of usage data by software. Simca’s stated principle is to have none.
Detracción (SPOT): A Peruvian mechanism where part of certain payments is deposited in a dedicated account. Verify locally.
WCAG: Web Content Accessibility Guidelines, the standard for accessible web content.