diff --git a/docs/cli.md b/docs/cli.md
index eb3dd70..d79dbd6 100644
--- a/docs/cli.md
+++ b/docs/cli.md
@@ -623,8 +623,8 @@ profiles/lines.vectors.json   the vectors: {"feature": ..., "cases": [...]}
 ```
 
 The vectors file and the profile are in the conformance corpus's case
-format, a public spec (version 0.1, early days), documented in
-ComlineProject/runtime's `runtime/conformance/README.md`. Every case in the
+format, a public spec (early days, versioned in its `VERSION`), documented in
+ComlineProject/specification's README. Every case in the
 file is run, and each profile fact's `proven_by` names cases in it.
 
 The implementation is a process speaking the conformance **ops protocol**,
@@ -658,17 +658,17 @@ unproven fact makes the exit code `1`.
 - `--impl <command line>`: the implementation.
 - `--encoding <name>`: only this encoding (repeatable). Default: every
   encoding the package declares.
-- `--corpus <dir>`: run a corpus laid out like ComlineProject/runtime's
-  `runtime/conformance` (`profiles/<name>.json`, `vectors/*.json`) instead
-  of the package's declarations: the official encodings (`packed@1`,
-  `datagram@2`, ...), whose vectors live there. Each encoding runs every
+- `--corpus <dir>`: run a copy of ComlineProject/specification
+  (`profiles/<name>.json`, `vectors/*.json`) instead of the package's
+  declarations: the official encodings (`packed@1`, `datagram@2`, ...),
+  whose vectors live there. Each encoding runs every
   case of the features its profile's facts name.
 - `--timeout <secs>`: how long the implementation may take for all the
   cases together.
 
 ```bash
 comline conformance --impl ./target/release/acme-lines-conformance
-comline conformance --impl comline-reference --corpus ../runtime/runtime/conformance --encoding packed@1
+comline conformance --impl comline-reference --corpus ../specification --encoding packed@1
 ```
 
 ### `comline clean`
diff --git a/src/cli.rs b/src/cli.rs
index 6c3dfa5..7fe0627 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -460,14 +460,13 @@ proven and which cases failed, with byte diffs; the exit code is 1 on any \
 failure. `--json` prints the same report as JSON on stdout instead \
 (`format`, `implementation`, `encodings`, `totals`, `verdict`).
 
-`--corpus` runs a corpus laid out like ComlineProject/runtime's \
-`runtime/conformance` (`profiles/`, `vectors/`) instead, for the official \
-encodings.
+`--corpus` runs a copy of ComlineProject/specification (`profiles/`, \
+`vectors/`) instead, for the official encodings.
 
 Examples:
   comline conformance --impl ./target/release/acme-lines-conformance
   comline conformance --impl \"node conformance.js\" --encoding com.acme.lines@1
-  comline conformance --impl comline-reference --corpus runtime/conformance --encoding packed@1
+  comline conformance --impl comline-reference --corpus specification --encoding packed@1
   comline conformance --impl ./target/release/acme-lines-conformance --json")]
     Conformance {
         /// The implementation's command line: a program and its arguments, split on whitespace
diff --git a/src/commands/conformance.rs b/src/commands/conformance.rs
index 1a27ca2..d53360b 100644
--- a/src/commands/conformance.rs
+++ b/src/commands/conformance.rs
@@ -7,12 +7,12 @@
 //! beside the profile, at `profiles/lines.vectors.json`: the profile's path
 //! with `.json` replaced by `.vectors.json`. The file is a corpus vectors
 //! file (`{"feature": ..., "cases": [...]}`), in the conformance spec's case
-//! format (ComlineProject/runtime `runtime/conformance/README.md`). Every
+//! format (ComlineProject/specification's README). Every
 //! case in it is run, and the profile's `proven_by` names cases in it.
 //!
 //! **The official encodings** (`packed@1`, ...) aren't declared by a package
-//! and their vectors live in the runtime's corpus: `--corpus <dir>` runs a
-//! corpus laid out like `runtime/conformance` (`profiles/<name>.json`,
+//! and their vectors live in the specification: `--corpus <dir>` runs a
+//! copy of ComlineProject/specification (`profiles/<name>.json`,
 //! `vectors/*.json`) instead of the package's declarations.
 //!
 //! **The implementation** is a process speaking the ops protocol, as
@@ -417,7 +417,7 @@ fn from_package(work_dir: &Path, names: &[String]) -> Result<Vec<Subject>> {
         if declared.is_empty() {
             return Err(miette!(
                 "the package declares no encodings (`encodings` in config.idp); to run an official \
-                 encoding's vectors, pass `--corpus <runtime/conformance>`"
+                 encoding's vectors, pass `--corpus <specification>`"
             ));
         }
         declared
@@ -425,8 +425,8 @@ fn from_package(work_dir: &Path, names: &[String]) -> Result<Vec<Subject>> {
         for n in names {
             if !declared.contains(n) {
                 let hint = if comline_core::encodings::is_bare(n) {
-                    "; an official encoding's vectors are in the runtime's corpus: pass \
-                     `--corpus <runtime/conformance>`"
+                    "; an official encoding's vectors are in the specification: pass \
+                     `--corpus <specification>`"
                 } else {
                     ""
                 };