Formatting the Table of Contents (Remove "Page", add periods)

Question

I would like to remove the column heading "Page" from the table of contents. I have looked around and cannot seem to find an answer (or a similar question).

I would also like to add a period "." after only the sections in the table of contents. I have found and tried the following code which produces a period after every entry in the table of contents, not just the sections.

\let \savenumberline \numberline
\def \numberline#1{\savenumberline{#1.}}

Edit: Adding a MWE (hopefully). My document is actually made up of at least 10 separate latex files included by using \input and is still 11,500 lines long. I hope that I have included enough to be helpful. There are items that are commented out just so I didn't lose what "solutions" I had found so far. The foreword is commented out because it was including a list of tables, which was not desired.

I also wanted to add that I noticed that my table of contents is no longer hyperlinking. I'm wondering if this is because I chose "tableofcontents" instead of using the foreword command.

\documentclass[draft,wd,letterpaper]{isov2} % needed to change ; to , in order to compile
 \let\ifpdf\relax % required to get rid of fatal error 
    % Latex Error: /usr/local/texlive/2013/texmf-dist/tex/generic/oberdiek/hobsub-generic.sty:3540 Package ifpdf Error: Name clash, \ifpdf is already defined.

 %\usepackage[top=3cm, bottom=3cm, left=3cm, right=3cm]{geometry}


 \usepackage{float}
 % see http://tex.stackexchange.com/questions/46512/too-many-unprocessed-floats
 \usepackage{morefloats}
 % see http://www.tex.ac.uk/cgi-bin/texfaq2html?label=underscore
 \usepackage{import} % file path 
 % see http://http://www.ctan.org/pkg/import
 \usepackage{multicol}
 % see http://www.ctan.org/pkg/multicol

 \usepackage{tabularx}
 \usepackage{longtable}

 % table of contents hyperlinks
 \usepackage{hyperref}
 \hypersetup{
colorlinks,
citecolor=black,
filecolor=black,
linkcolor=black,
urlcolor=black
 }

 %\usepackage{lmodern}"
 %\usepackage[T1]{fontenc}"
 %\usepackage{textcomp}"
 %\usepackage{underscore}"

% This bit controls how ASN1 is formatted
\usepackage{listings}
\lstdefinelanguage{ASN1} {
 keywords={CHOICE, SEQUENCE, BEGIN, END, IMPLICIT, EXPLICIT, INTEGER, DEFINITIONS},
 sensitive=false,
 morecomment=[s]{(--}{--)},
 morecomment=[l]{--}
 }

\lstnewenvironment{asn1}[1][] {
 \lstset{
language=ASN1,
tabsize=2, 
xleftmargin=1em
captionpos=b,
frame=single,
% basicstyle=\scriptsize,
basicstyle=\footnotesize\ttfamily,
float,
#1
  }
}
 {}

\newcolumntype{L}[1]{>{\raggedright\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
\newcolumntype{R}[1]{>{\raggedleft\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}

% essentially allows one to build a table within a table
% \newcommand{\specialcell}[2][c]{%
%   \begin{tabular}[#1]{@{}c@{}}#2\end{tabular}}

% allow underscores to serve as linebreaks for wrapping
\renewcommand\_{\textunderscore\allowbreak}

% defines the command \camelhyphen.  Anything in the argument can break before a capital    letter and wrap with a hyphen
\makeatletter
\def\camelhyphen{\leavevmode\begingroup
\let\ifcase\iftrue
\def\or##1{%
 \catcode`##1\active\uccode`\~`##1\uppercase{%
\def~{\egroup\-\hbox\bgroup\string##1}}}%
\@Alph{}%
\@camelhyphen}
\def\@camelhyphen#1{{\hbox\bgroup#1\egroup}\endgroup}
\makeatother

\standard{ISO/IEEE 11073-10201}
\yearofedition{2013}
\languageofedition{(E)}
\setcounter{tocdepth}{3}     % ToC includes ssclauses and above


% Add a period (.) after the section numbering
\makeatletter
\def\@seccntformat#1{\csname the#1\endcsname.\quad}
\makeatother

\usepackage{etoolbox} \patchcmd{\tableofcontents}{\hfil\pagename}{}{}{}

%\usepackage[dotinlabels]{titletoc}

%\usepackage{tocloft}
%\newcommand{\cftdot}{.}
%\let \savenumberline \numberline
%\def \numberline#1{\savenumberline{#1.}}

\usepackage{lipsum}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}

\title{Example Document}

\newpage
\tableofcontents

\clause{Hello}\lipsum
    \sclause{Little}\lipsum
\clause{Second}\lipsum

\end{document}

Clarification: I did not edit my actual .tex file to create a MWE. I did not comment anything out that isn't originally commented in my actual file. The code above creates a similar looking document to what I am working with. I also realize now that I have been referring to clauses as sections, but they are actually clauses.

In the TOC, I would like a period after the clause number only (i.e. not sclause or ssclauses).

@Gonzalo Medina - Thank you very much! That worked beautifully! My TOC now does not show "Page"

Thank you to everyone for your helpful comments.

Answer 1

To suppress the word "page" from the ToC, add these lines to the preamble:

\usepackage{etoolbox} 
\patchcmd{\tableofcontents}{\hfil\pagename}{}{}{}

To add a period after the number for clauses in the ToC (but not after) sclauses or other sectional unit entries, a redefinition of \@sect is required; in this redefinition a period is added only if the sectional unit level is one (i.e., the sectional unit is a clause).

The complete code (I deleted from my example some of the packages and code from the code in the question that were not relevant to the problem discussed):

\documentclass[draft,wd,letterpaper]{isov2}
\let\ifpdf\relax
\usepackage{etoolbox} 
\usepackage{hyperref}

\hypersetup{
colorlinks,
citecolor=black,
filecolor=black,
linkcolor=black,
urlcolor=black
}

\standard{ISO/IEEE 11073-10201}
\yearofedition{2013}
\languageofedition{(E)}
\setcounter{tocdepth}{3}     % ToC includes ssclauses and above

% Add a period (.) after the section numbering
\makeatletter
\def\@seccntformat#1{\csname the#1\endcsname.\quad}
\makeatother

% suppress ''page'' form the ToC
\patchcmd{\tableofcontents}{\hfil\pagename}{}{}{}

% Add a perior after clause number in ToC
\makeatletter
\def\@sect#1#2#3#4#5#6[#7]#8{%
\ifnum #2>\c@secnumdepth
\let\@svsec\@empty
\else
\refstepcounter{#1}%
\protected@edef\@svsec{\@seccntformat{#1}\relax}%
\fi
\@tempskipa #5\relax
\ifdim \@tempskipa>\z@
\begingroup
#6{%
\@hangfrom{\hskip #3\relax\@svsec}%
\interlinepenalty \@M #8\@@par}%
\endgroup
\csname #1mark\endcsname{#7}%
\addcontentsline{toc}{#1}{%
\ifnum #2>\c@secnumdepth \else
  \ifnum#2=1\relax
    \protect\numberline{\csname the#1\endcsname.}%
  \else  
    \protect\numberline{\csname the#1\endcsname}%
  \fi
\fi
#7}%
\else
\@xsect
\def\@svsechd{%
#6{\hskip #3\relax
\@svsec #8}%
\csname #1mark\endcsname{#7}%
\addcontentsline{toc}{#1}{%
\ifnum #2>\c@secnumdepth \else
\protect\numberline{\csname the#1\endcsname}%
\fi
#7}}%
\fi
\@xsect{#5}}
\makeatother

\begin{document}

\title{Example Document}

\newpage
\tableofcontents

\clause{First test clause}
test
\sclause{Test sclause}
test
\ssclause{Test ssclause}
test
\clause{Second test clause}
test

\end{document}

The result: