diff --git a/cmd/tools/modules/testing/output_normal.v b/cmd/tools/modules/testing/output_normal.v
index 272fabf39d..3e27664b1d 100644
--- a/cmd/tools/modules/testing/output_normal.v
+++ b/cmd/tools/modules/testing/output_normal.v
@@ -113,8 +113,8 @@ pub fn (r NormalReporter) report_stop() {
 	eprintln('')
 }
 
-//// TODO: reconsider if these should be public:
-
+// progress will show the given message normally
+// TODO: reconsider if these should be public:
 pub fn (r NormalReporter) progress(index int, message string) {
 	eprintln(message)
 }
diff --git a/vlib/datatypes/bstree.v b/vlib/datatypes/bstree.v
index c73206f5ed..7cae56497f 100644
--- a/vlib/datatypes/bstree.v
+++ b/vlib/datatypes/bstree.v
@@ -1,6 +1,6 @@
 module datatypes
 
-/// Internal representation of the tree node
+// Internal representation of the tree node
 @[heap]
 struct BSTreeNode[T] {
 mut:
diff --git a/vlib/dlmalloc/dlmalloc.v b/vlib/dlmalloc/dlmalloc.v
index 8c5785379b..d47576efa2 100644
--- a/vlib/dlmalloc/dlmalloc.v
+++ b/vlib/dlmalloc/dlmalloc.v
@@ -926,7 +926,7 @@ pub fn (mut dl Dlmalloc) malloc(size usize) voidptr {
 	}
 }
 
-/// malloc behaves as libc malloc, but operates within the given space
+// malloc_real behaves as libc malloc, but operates within the given space
 @[unsafe]
 fn (mut dl Dlmalloc) malloc_real(size usize) voidptr {
 	mut nb := usize(0)
diff --git a/vlib/dlmalloc/global.v b/vlib/dlmalloc/global.v
index 7a509ccb40..390d5f201f 100644
--- a/vlib/dlmalloc/global.v
+++ b/vlib/dlmalloc/global.v
@@ -3,10 +3,9 @@ module dlmalloc
 
 __global global = new(get_system_allocator())
 
-/// malloc allocates `size` bytes.
-///
-/// Returns a null pointer if allocation fails. Returns a valid pointer
-/// otherwise.
+// malloc allocates `size` bytes.
+// It returns a null pointer if allocation fails.
+// It returns a valid pointer otherwise.
 @[unsafe]
 pub fn malloc(size usize) voidptr {
 	unsafe {
diff --git a/vlib/io/reader.v b/vlib/io/reader.v
index f1937bf280..47170f5756 100644
--- a/vlib/io/reader.v
+++ b/vlib/io/reader.v
@@ -1,6 +1,6 @@
 module io
 
-/// Eof error means that we reach the end of the stream.
+// Eof error means that we reach the end of the stream.
 pub struct Eof {
 	Error
 }
diff --git a/vlib/os/file.c.v b/vlib/os/file.c.v
index 303652050e..b69ef6ce0e 100644
--- a/vlib/os/file.c.v
+++ b/vlib/os/file.c.v
@@ -1,6 +1,6 @@
 module os
 
-/// Eof error means that we reach the end of the file.
+// Eof error means that we reach the end of the file.
 pub struct Eof {
 	Error
 }
diff --git a/vlib/v/checker/autocomplete.v b/vlib/v/checker/autocomplete.v
index a254174639..0b02059af3 100644
--- a/vlib/v/checker/autocomplete.v
+++ b/vlib/v/checker/autocomplete.v
@@ -42,7 +42,7 @@ fn (mut c Checker) ident_autocomplete(node ast.Ident) {
 	if !c.pref.linfo.vars_printed[nt] { // avoid dups
 		sb.writeln('===')
 		sb.writeln('VAR ${nt}') //${node.name}:${sym.name}')
-		/// print_backtrace()
+		// print_backtrace()
 		/*
 		if sym.kind == .alias {
 			parent_sym := c.table.sym(sym.parent_type)
diff --git a/vlib/v/gen/c/fn.v b/vlib/v/gen/c/fn.v
index 029a2a192c..ca05d6efb1 100644
--- a/vlib/v/gen/c/fn.v
+++ b/vlib/v/gen/c/fn.v
@@ -754,7 +754,7 @@ fn (mut g Gen) fn_decl_params(params []ast.Param, scope &ast.Scope, is_variadic
 			g.write('void')
 		}
 	}
-	/// mut is_implicit_ctx := false
+	// mut is_implicit_ctx := false
 	// Veb actions defined by user can have implicit context
 	/*
 	if g.cur_fn != unsafe { nil } && g.cur_fn.is_method && g.cur_mod.name != 'veb' {
diff --git a/vlib/v/gen/native/macho.v b/vlib/v/gen/native/macho.v
index b05fc6b63e..05fc54e556 100644
--- a/vlib/v/gen/native/macho.v
+++ b/vlib/v/gen/native/macho.v
@@ -317,7 +317,7 @@ pub fn (mut g Gen) generate_macho_object_header() {
 	g.write32(0)
 	g.write32(0)
 	g.write32(0)
-	/// ???
+	// ???
 	g.write32(0x32)
 	g.write32(0x18)
 	g.write32(0x01)
diff --git a/vlib/v/pref/line_info.v b/vlib/v/pref/line_info.v
index 2a93e22965..8139e325d8 100644
--- a/vlib/v/pref/line_info.v
+++ b/vlib/v/pref/line_info.v
@@ -2,11 +2,6 @@
 // Use of this source code is governed by an MIT license that can be found in the LICENSE file.
 module pref
 
-// import v.ast
-// import v.pref
-// import os
-
-// fn (mut p Pref) parse_line_info(line string, all_ast_files []&ast.File) {
 fn (mut p Preferences) parse_line_info(line string) {
 	// println("parse_line_info '${line}'")
 	format_err := 'wrong format, use `-line-info "file.v:24:expr_to_look_up"'
@@ -22,34 +17,6 @@ fn (mut p Preferences) parse_line_info(line string) {
 		eprintln(format_err)
 		return
 	}
-
-	// println('files.len=${c.files.len}')
-	// Find which file contains the line
-	mut found := true // false
-	//// mut found_path := ''
-	// mut found_file_idx := -1
-	/*
-	for i, file in all_ast_files {
-		// base := os.base(file.path)
-		base := file.path // os.base(file.path)
-		// println(base)
-		if base == file_name {
-			if found {
-				eprintln('more than one "${file_name}" found: "${file.path}" and "${found_path}"')
-				return
-			}
-			found = true
-			found_path = file.path
-			found_file_idx = i
-		}
-	}
-	*/
-
-	if !found {
-		eprintln('file "${file_name}" not found among those parsed')
-		return
-	}
-
 	p.linfo = LineInfo{
 		line_nr: line_nr
 		path:    file_name