README.md

@@ -27,7 +27,7 @@ In priority order.
 
 1. **Lossless first.** The round-trip holds for every document the lossless conversions take, node
    types this version does not know included; one that has no spelling is refused and says where,
-   never silently reduced.
+   never silently reduced. Every call answers: no input makes one hang or overflow the stack.
    Every goal below gives way to this one.
 2. **ADF is the hub.** Every format and flavour converts to and from ADF, and no two others
    convert directly: markdown↔HTML composes through ADF. Adding a format or flavour costs one
@@ -49,8 +49,9 @@ In priority order.
    the emitted formats are.
 7. **Nothing in the way.** No runtime dependencies, no I/O, no configuration, no host API: ESM on
    any ES2022 engine, in a browser as readily as on a server, installed from public npm.
-8. **Correct before fast.** A whole document in, a whole result out, one call; no input makes a
-   call hang or overflow the stack.
+8. **Correct before fast.** Each format is read and written as its own specification defines it —
+   markdown as CommonMark's spec suite reads it, well-formed HTML as the HTML standard parses it —
+   and a call takes a whole document and returns a whole result.
 9. **Fast once correct.** Conversion time grows linearly with the document wherever the goals above
    allow it; a faster path that risks one of them is not taken.