diff --git a/dist/lin.lua b/dist/lin.lua
index 85727c6..3d37d5b 100644
--- a/dist/lin.lua
+++ b/dist/lin.lua
@@ -6491,6 +6491,37 @@ lit.metastruct = {
   },
 }
 
+-- TODO
+function lit.stringify(content)
+  if pandoc.utils.type(content) == "Inlines" then 
+    return pandoc.utils.stringify(content:walk {
+      Quoted = function(quoted)
+        local quote = (quoted.quotetype == SingleQuoted and '"' or "'")
+        quoted = pandoc.utils.stringify(quoted.content)
+        return pandoc.Str(quote .. quoted .. quote)
+      end,
+      Inline = function(inline)
+        return pandoc.utils.stringify(inline)
+      end,
+     })
+  else
+    return pandoc.utils.stringify(content)
+  end
+end
+
+function lit.meta2table(meta)
+  for k, v in pairs(meta) do
+    if pandoc.utils.type(v) == "table" then
+      lit.meta2table(v)
+    else
+      v = lit.stringify(v)
+      -- print(k, v)
+    end
+  end
+  return meta
+end
+lit.test = lit.meta2table(pandoc.read(("src/locate.yaml"):read_text()).meta)
+
 -- Messages for the user
 lit.msg = {
   ["INFO"] = {
@@ -6613,6 +6644,7 @@ function lit.checkmetatype(type, meta, key)
   end
 end
 
+-- TODO: has bug
 function lit.checkmetatable(table, meta, key)
   local mval = lit.getmetaval(meta, key) 
   for _, pattern in pairs(table) do
diff --git a/src/literate.lua b/src/literate.lua
index 0345184..031d467 100644
--- a/src/literate.lua
+++ b/src/literate.lua
@@ -28,6 +28,37 @@ lit.metastruct = {
   },
 }
 
+-- TODO
+function lit.stringify(content)
+  if pandoc.utils.type(content) == "Inlines" then 
+    return pandoc.utils.stringify(content:walk {
+      Quoted = function(quoted)
+        local quote = (quoted.quotetype == SingleQuoted and '"' or "'")
+        quoted = pandoc.utils.stringify(quoted.content)
+        return pandoc.Str(quote .. quoted .. quote)
+      end,
+      Inline = function(inline)
+        return pandoc.utils.stringify(inline)
+      end,
+     })
+  else
+    return pandoc.utils.stringify(content)
+  end
+end
+
+function lit.meta2table(meta)
+  for k, v in pairs(meta) do
+    if pandoc.utils.type(v) == "table" then
+      lit.meta2table(v)
+    else
+      v = lit.stringify(v)
+      -- print(k, v)
+    end
+  end
+  return meta
+end
+lit.test = lit.meta2table(pandoc.read(("src/locate.yaml"):read_text()).meta)
+
 -- Messages for the user
 lit.msg = {
   ["INFO"] = {
@@ -150,6 +181,7 @@ function lit.checkmetatype(type, meta, key)
   end
 end
 
+-- TODO: has bug
 function lit.checkmetatable(table, meta, key)
   local mval = lit.getmetaval(meta, key) 
   for _, pattern in pairs(table) do
diff --git a/src/locate.yaml b/src/locate.yaml
new file mode 100644
index 0000000..13d7a92
--- /dev/null
+++ b/src/locate.yaml
@@ -0,0 +1,35 @@
+---
+INFO:
+  parsing:
+    en: Parsing:\n#1
+    es: Realizando análisis sintáctico:\n#1
+WARNING:
+  foo:
+    en: true
+    es: 1
+ERROR:
+  invalid_key:
+    en: Invalid key '#1' with value '#2'
+    es: Clave '#1' inválida con valor '#2'
+  invalid_path:
+    en: Invalid path '#1' in key '#2'
+    es: Ruta '#1' inválida en clave '#2'
+  invalid_type:
+    en: Invalid type '#1' in key '#2'
+    es: Tipo '#1' inválido en clave '#2'
+  invalid_value:
+    en: Invalid value '#1' in key '#2'
+    es: Valor '#1' inválido en clave '#2'
+  no_key:
+    en: Key '#1' not found
+    es: Clave '#1' no encontrada
+  aborted:
+    en: Aborted due previous errors
+    es: Abortado debido a previos errores
+  yaml_empty:
+    en: Empty YAML
+    es: YAML vacío
+  yaml_invalid:
+    en: Invalid YAML
+    es: YAML inválido
+...