diff --git a/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/en.md b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/en.md
new file mode 100644
index 000000000..86b6d21ec
--- /dev/null
+++ b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/en.md
@@ -0,0 +1,74 @@
+---
+title: Using the built-in functions "strings.Contains", "strings.HasPrefix", and "strings.HasSuffix" as field validators
+tags:
+- commented cue
+authors:
+- jpluscplusm
+toc_hide: true
+---
+
+This [Commented CUE]({{< relref "docs/howto#commented-cue-guides" >}})
+demonstrates how to use the built-in functions
+[`strings.Contains`](https://pkg.go.dev/cuelang.org/go/pkg/strings#Contains),
+[`strings.HasPrefix`](https://pkg.go.dev/cuelang.org/go/pkg/strings#HasPrefix), and
+[`strings.HasSuffix`](https://pkg.go.dev/cuelang.org/go/pkg/strings#HasSuffix)
+to validate fields by asserting that their values match specific strings.
+
+{{{with code "en" "cc"}}}
+#location top bottom
+
+! exec cue vet
+cmp stderr out
+-- file.cue --
+package example
+
+import "strings"
+
+prefix:   "Some numbers (123) and letters"
+contains: "Some numbers (123) and letters"
+suffix:   "Some numbers (123) and letters"
+
+prefix: strings.HasPrefix("Some numbers")
+prefix: strings.HasPrefix(_incorrectPrefix)
+
+contains: strings.Contains("numbers") & strings.Contains("123")
+contains: strings.Contains("punctuation")
+
+suffix: strings.HasSuffix(_letters)
+suffix: strings.HasSuffix("incorrect suffix")
+
+// None of the built-in functions demonstrated here accept regular expressions.
+// Their parameters are interpreted as fixed strings, whether provided as
+// references or inline.
+contains: strings.Contains(".*")
+
+_incorrectPrefix: "incorrect prefix"
+_letters:         "letters"
+-- out --
+prefix: invalid value "Some numbers (123) and letters" (does not satisfy strings.HasPrefix("incorrect prefix")):
+    ./file.cue:10:9
+    ./file.cue:5:11
+    ./file.cue:9:9
+    ./file.cue:23:19
+contains: invalid value "Some numbers (123) and letters" (does not satisfy strings.Contains("punctuation")):
+    ./file.cue:13:11
+    ./file.cue:6:11
+    ./file.cue:12:11
+    ./file.cue:13:28
+    ./file.cue:21:11
+suffix: invalid value "Some numbers (123) and letters" (does not satisfy strings.HasSuffix("incorrect suffix")):
+    ./file.cue:16:9
+    ./file.cue:7:11
+    ./file.cue:15:9
+    ./file.cue:16:27
+contains: invalid value "Some numbers (123) and letters" (does not satisfy strings.Contains(".*")):
+    ./file.cue:21:11
+    ./file.cue:6:11
+    ./file.cue:12:11
+    ./file.cue:13:11
+    ./file.cue:21:28
+{{{end}}}
+
+## Related content
+
+- The [`strings`](https://pkg.go.dev/cuelang.org/go/pkg/strings) built-in package
diff --git a/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/gen_cache.cue b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/gen_cache.cue
new file mode 100644
index 000000000..b16a84876
--- /dev/null
+++ b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/gen_cache.cue
@@ -0,0 +1,18 @@
+package site
+{
+	content: {
+		docs: {
+			howto: {
+				"use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators": {
+					page: {
+						cache: {
+							code: {
+								cc: "uizDpXW0gIGDUNQ7I8GxPnkCzNfPcL4Vftcwt6sTZsY="
+							}
+						}
+					}
+				}
+			}
+		}
+	}
+}
diff --git a/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/page.cue b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/page.cue
new file mode 100644
index 000000000..77d4ce68a
--- /dev/null
+++ b/content/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/page.cue
@@ -0,0 +1,3 @@
+package site
+
+content: docs: howto: "use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators": {}
diff --git a/hugo/content/en/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/index.md b/hugo/content/en/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/index.md
new file mode 100644
index 000000000..3de14e385
--- /dev/null
+++ b/hugo/content/en/docs/howto/use-the-built-in-functions-strings-contains-strings-hasprefix-strings-hassuffix-as-field-validators/index.md
@@ -0,0 +1,73 @@
+---
+title: Using the built-in functions "strings.Contains", "strings.HasPrefix", and "strings.HasSuffix" as field validators
+tags:
+- commented cue
+authors:
+- jpluscplusm
+toc_hide: true
+---
+
+This [Commented CUE]({{< relref "docs/howto#commented-cue-guides" >}})
+demonstrates how to use the built-in functions
+[`strings.Contains`](https://pkg.go.dev/cuelang.org/go/pkg/strings#Contains),
+[`strings.HasPrefix`](https://pkg.go.dev/cuelang.org/go/pkg/strings#HasPrefix), and
+[`strings.HasSuffix`](https://pkg.go.dev/cuelang.org/go/pkg/strings#HasSuffix)
+to validate fields by asserting that their values match specific strings.
+
+{{< code-tabs >}}
+{{< code-tab name="file.cue" language="cue"  area="top" >}}
+package example
+
+import "strings"
+
+prefix:   "Some numbers (123) and letters"
+contains: "Some numbers (123) and letters"
+suffix:   "Some numbers (123) and letters"
+
+prefix: strings.HasPrefix("Some numbers")
+prefix: strings.HasPrefix(_incorrectPrefix)
+
+contains: strings.Contains("numbers") & strings.Contains("123")
+contains: strings.Contains("punctuation")
+
+suffix: strings.HasSuffix(_letters)
+suffix: strings.HasSuffix("incorrect suffix")
+
+// None of the built-in functions demonstrated here accept regular expressions.
+// Their parameters are interpreted as fixed strings, whether provided as
+// references or inline.
+contains: strings.Contains(".*")
+
+_incorrectPrefix: "incorrect prefix"
+_letters:         "letters"
+{{< /code-tab >}}
+{{< code-tab name="TERMINAL" language="" type="terminal" area="bottom" >}}
+$ cue vet
+prefix: invalid value "Some numbers (123) and letters" (does not satisfy strings.HasPrefix("incorrect prefix")):
+    ./file.cue:10:9
+    ./file.cue:5:11
+    ./file.cue:9:9
+    ./file.cue:23:19
+contains: invalid value "Some numbers (123) and letters" (does not satisfy strings.Contains("punctuation")):
+    ./file.cue:13:11
+    ./file.cue:6:11
+    ./file.cue:12:11
+    ./file.cue:13:28
+    ./file.cue:21:11
+suffix: invalid value "Some numbers (123) and letters" (does not satisfy strings.HasSuffix("incorrect suffix")):
+    ./file.cue:16:9
+    ./file.cue:7:11
+    ./file.cue:15:9
+    ./file.cue:16:27
+contains: invalid value "Some numbers (123) and letters" (does not satisfy strings.Contains(".*")):
+    ./file.cue:21:11
+    ./file.cue:6:11
+    ./file.cue:12:11
+    ./file.cue:13:11
+    ./file.cue:21:28
+{{< /code-tab >}}
+{{< /code-tabs >}}
+
+## Related content
+
+- The [`strings`](https://pkg.go.dev/cuelang.org/go/pkg/strings) built-in package